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Finding the Fourth Proportional to 663,780,687.60, 995,671,031.40 and 598,023,721.20

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Solution

The fourth proportional to 663,780,687.60, 995,671,031.40 and 598,023,721.20 is: 897,035,581.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,780,687.60 : 995,671,031.40 = 598,023,721.20 : x
  2. Step 2: Convert to fraction form
    663,780,687.60/995,671,031.40 = 598,023,721.20/x
  3. Step 3: Cross multiply
    663,780,687.60x = 995,671,031.40 × 598,023,721.20
  4. Step 4: Simplify right side
    663,780,687.60x = 595,434,895,288,870,016
  5. Step 5: Solve for x
    x = 595,434,895,288,870,016/663,780,687.60
  6. Step 6: Final answer
    x = 897,035,581.80

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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.