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Finding the Fourth Proportional to 629,859,672.60, 944,789,508.90 and 220,768,200.60

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Solution

The fourth proportional to 629,859,672.60, 944,789,508.90 and 220,768,200.60 is: 331,152,300.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,859,672.60 : 944,789,508.90 = 220,768,200.60 : x
  2. Step 2: Convert to fraction form
    629,859,672.60/944,789,508.90 = 220,768,200.60/x
  3. Step 3: Cross multiply
    629,859,672.60x = 944,789,508.90 × 220,768,200.60
  4. Step 4: Simplify right side
    629,859,672.60x = 208,579,479,825,610,688
  5. Step 5: Solve for x
    x = 208,579,479,825,610,688/629,859,672.60
  6. Step 6: Final answer
    x = 331,152,300.90

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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.