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Finding the Fourth Proportional to 803,836,896.60, 1,205,755,344.90 and 769,824,672.60

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Solution

The fourth proportional to 803,836,896.60, 1,205,755,344.90 and 769,824,672.60 is: 1,154,737,008.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,836,896.60 : 1,205,755,344.90 = 769,824,672.60 : x
  2. Step 2: Convert to fraction form
    803,836,896.60/1,205,755,344.90 = 769,824,672.60/x
  3. Step 3: Cross multiply
    803,836,896.60x = 1,205,755,344.90 × 769,824,672.60
  4. Step 4: Simplify right side
    803,836,896.60x = 928,220,213,623,342,720
  5. Step 5: Solve for x
    x = 928,220,213,623,342,720/803,836,896.60
  6. Step 6: Final answer
    x = 1,154,737,008.90

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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.