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Finding the Fourth Proportional to 11,361,691.65, 15,679,521.35 and 6,719,456.10

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Solution

The fourth proportional to 11,361,691.65, 15,679,521.35 and 6,719,456.10 is: 9,273,078.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,361,691.65 : 15,679,521.35 = 6,719,456.10 : x
  2. Step 2: Convert to fraction form
    11,361,691.65/15,679,521.35 = 6,719,456.10/x
  3. Step 3: Cross multiply
    11,361,691.65x = 15,679,521.35 × 6,719,456.10
  4. Step 4: Simplify right side
    11,361,691.65x = 105,357,855,380,337.73
  5. Step 5: Solve for x
    x = 105,357,855,380,337.73/11,361,691.65
  6. Step 6: Final answer
    x = 9,273,078.22

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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.