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Finding the Fourth Proportional to 61,255.52, 91,871.68 and 16,871.20

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Solution

The fourth proportional to 61,255.52, 91,871.68 and 16,871.20 is: 25,303.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,255.52 : 91,871.68 = 16,871.20 : x
  2. Step 2: Convert to fraction form
    61,255.52/91,871.68 = 16,871.20/x
  3. Step 3: Cross multiply
    61,255.52x = 91,871.68 × 16,871.20
  4. Step 4: Simplify right side
    61,255.52x = 1,549,985,487.62
  5. Step 5: Solve for x
    x = 1,549,985,487.62/61,255.52
  6. Step 6: Final answer
    x = 25,303.61

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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.