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Finding the Fourth Proportional to 63,645.68, 87,758.57 and 40,644.52

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Solution

The fourth proportional to 63,645.68, 87,758.57 and 40,644.52 is: 56,043.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,645.68 : 87,758.57 = 40,644.52 : x
  2. Step 2: Convert to fraction form
    63,645.68/87,758.57 = 40,644.52/x
  3. Step 3: Cross multiply
    63,645.68x = 87,758.57 × 40,644.52
  4. Step 4: Simplify right side
    63,645.68x = 3,566,904,953.54
  5. Step 5: Solve for x
    x = 3,566,904,953.54/63,645.68
  6. Step 6: Final answer
    x = 56,043.16

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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.