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Finding the Fourth Proportional to 90,726,891.40, 136,090,337.10 and 90,726,891.40

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Solution

The fourth proportional to 90,726,891.40, 136,090,337.10 and 90,726,891.40 is: 136,090,337.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,726,891.40 : 136,090,337.10 = 90,726,891.40 : x
  2. Step 2: Convert to fraction form
    90,726,891.40/136,090,337.10 = 90,726,891.40/x
  3. Step 3: Cross multiply
    90,726,891.40x = 136,090,337.10 × 90,726,891.40
  4. Step 4: Simplify right side
    90,726,891.40x = 12,347,053,234,661,092
  5. Step 5: Solve for x
    x = 12,347,053,234,661,092/90,726,891.40
  6. Step 6: Final answer
    x = 136,090,337.10

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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.