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Finding the Fourth Proportional to 653,418,155.80, 980,127,233.70 and 653,418,155.80

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Solution

The fourth proportional to 653,418,155.80, 980,127,233.70 and 653,418,155.80 is: 980,127,233.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,418,155.80 : 980,127,233.70 = 653,418,155.80 : x
  2. Step 2: Convert to fraction form
    653,418,155.80/980,127,233.70 = 653,418,155.80/x
  3. Step 3: Cross multiply
    653,418,155.80x = 980,127,233.70 × 653,418,155.80
  4. Step 4: Simplify right side
    653,418,155.80x = 640,432,929,493,609,600
  5. Step 5: Solve for x
    x = 640,432,929,493,609,600/653,418,155.80
  6. Step 6: Final answer
    x = 980,127,233.70

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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.