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Finding the Fourth Proportional to 92,115.10, 138,060.60 and 52,034.68

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Solution

The fourth proportional to 92,115.10, 138,060.60 and 52,034.68 is: 77,988.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,115.10 : 138,060.60 = 52,034.68 : x
  2. Step 2: Convert to fraction form
    92,115.10/138,060.60 = 52,034.68/x
  3. Step 3: Cross multiply
    92,115.10x = 138,060.60 × 52,034.68
  4. Step 4: Simplify right side
    92,115.10x = 7,183,939,141.61
  5. Step 5: Solve for x
    x = 7,183,939,141.61/92,115.10
  6. Step 6: Final answer
    x = 77,988.72

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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.