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Finding the Fourth Proportional to 19,687,904.88, 29,489,342.04 and 19,206,065.04

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Solution

The fourth proportional to 19,687,904.88, 29,489,342.04 and 19,206,065.04 is: 28,767,622.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,687,904.88 : 29,489,342.04 = 19,206,065.04 : x
  2. Step 2: Convert to fraction form
    19,687,904.88/29,489,342.04 = 19,206,065.04/x
  3. Step 3: Cross multiply
    19,687,904.88x = 29,489,342.04 × 19,206,065.04
  4. Step 4: Simplify right side
    19,687,904.88x = 566,374,221,207,046.25
  5. Step 5: Solve for x
    x = 566,374,221,207,046.25/19,687,904.88
  6. Step 6: Final answer
    x = 28,767,622.79

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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.