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Finding the Fourth Proportional to 159,843,691.71, 220,584,291.86 and 86,504,833.71

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Solution

The fourth proportional to 159,843,691.71, 220,584,291.86 and 86,504,833.71 is: 119,376,669.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,843,691.71 : 220,584,291.86 = 86,504,833.71 : x
  2. Step 2: Convert to fraction form
    159,843,691.71/220,584,291.86 = 86,504,833.71/x
  3. Step 3: Cross multiply
    159,843,691.71x = 220,584,291.86 × 86,504,833.71
  4. Step 4: Simplify right side
    159,843,691.71x = 19,081,607,486,603,668
  5. Step 5: Solve for x
    x = 19,081,607,486,603,668/159,843,691.71
  6. Step 6: Final answer
    x = 119,376,669.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.