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Finding the Fourth Proportional to 86,915.52, 130,324.32 and 27,737.28

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Solution

The fourth proportional to 86,915.52, 130,324.32 and 27,737.28 is: 41,590.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,915.52 : 130,324.32 = 27,737.28 : x
  2. Step 2: Convert to fraction form
    86,915.52/130,324.32 = 27,737.28/x
  3. Step 3: Cross multiply
    86,915.52x = 130,324.32 × 27,737.28
  4. Step 4: Simplify right side
    86,915.52x = 3,614,842,154.65
  5. Step 5: Solve for x
    x = 3,614,842,154.65/86,915.52
  6. Step 6: Final answer
    x = 41,590.30

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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.