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Finding the Fourth Proportional to 71,928.76, 107,889.17 and 22,008.86

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Solution

The fourth proportional to 71,928.76, 107,889.17 and 22,008.86 is: 33,012.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,928.76 : 107,889.17 = 22,008.86 : x
  2. Step 2: Convert to fraction form
    71,928.76/107,889.17 = 22,008.86/x
  3. Step 3: Cross multiply
    71,928.76x = 107,889.17 × 22,008.86
  4. Step 4: Simplify right side
    71,928.76x = 2,374,518,000.02
  5. Step 5: Solve for x
    x = 2,374,518,000.02/71,928.76
  6. Step 6: Final answer
    x = 33,012.08

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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.