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Finding the Fourth Proportional to 92,082.88, 138,097.05 and 39,479.86

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Solution

The fourth proportional to 92,082.88, 138,097.05 and 39,479.86 is: 59,208.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,082.88 : 138,097.05 = 39,479.86 : x
  2. Step 2: Convert to fraction form
    92,082.88/138,097.05 = 39,479.86/x
  3. Step 3: Cross multiply
    92,082.88x = 138,097.05 × 39,479.86
  4. Step 4: Simplify right side
    92,082.88x = 5,452,052,200.41
  5. Step 5: Solve for x
    x = 5,452,052,200.41/92,082.88
  6. Step 6: Final answer
    x = 59,208.10

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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.