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Finding the Fourth Proportional to 629,856,590.40, 944,784,885.60 and 623,809,972.80

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Solution

The fourth proportional to 629,856,590.40, 944,784,885.60 and 623,809,972.80 is: 935,714,959.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,856,590.40 : 944,784,885.60 = 623,809,972.80 : x
  2. Step 2: Convert to fraction form
    629,856,590.40/944,784,885.60 = 623,809,972.80/x
  3. Step 3: Cross multiply
    629,856,590.40x = 944,784,885.60 × 623,809,972.80
  4. Step 4: Simplify right side
    629,856,590.40x = 589,366,233,787,987,072
  5. Step 5: Solve for x
    x = 589,366,233,787,987,072/629,856,590.40
  6. Step 6: Final answer
    x = 935,714,959.20

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Half scale
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Double scale
Find fourth proportional to 629,856,591.40, 944,784,887.10 and 623,809,973.80
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.