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Finding the Fourth Proportional to 101,934.65, 140,665.92 and 56,615.52

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Solution

The fourth proportional to 101,934.65, 140,665.92 and 56,615.52 is: 78,127.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,934.65 : 140,665.92 = 56,615.52 : x
  2. Step 2: Convert to fraction form
    101,934.65/140,665.92 = 56,615.52/x
  3. Step 3: Cross multiply
    101,934.65x = 140,665.92 × 56,615.52
  4. Step 4: Simplify right side
    101,934.65x = 7,963,874,207.08
  5. Step 5: Solve for x
    x = 7,963,874,207.08/101,934.65
  6. Step 6: Final answer
    x = 78,127.26

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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.