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Finding the Fourth Proportional to 629,870.80, 944,806.20 and 314,942.80

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Solution

The fourth proportional to 629,870.80, 944,806.20 and 314,942.80 is: 472,414.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,870.80 : 944,806.20 = 314,942.80 : x
  2. Step 2: Convert to fraction form
    629,870.80/944,806.20 = 314,942.80/x
  3. Step 3: Cross multiply
    629,870.80x = 944,806.20 × 314,942.80
  4. Step 4: Simplify right side
    629,870.80x = 297,559,910,085.36
  5. Step 5: Solve for x
    x = 297,559,910,085.36/629,870.80
  6. Step 6: Final answer
    x = 472,414.20

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Half scale
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Double scale
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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.