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Finding the Fourth Proportional to 92,115.60, 138,061.35 and 52,035.18

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Solution

The fourth proportional to 92,115.60, 138,061.35 and 52,035.18 is: 77,989.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,115.60 : 138,061.35 = 52,035.18 : x
  2. Step 2: Convert to fraction form
    92,115.60/138,061.35 = 52,035.18/x
  3. Step 3: Cross multiply
    92,115.60x = 138,061.35 × 52,035.18
  4. Step 4: Simplify right side
    92,115.60x = 7,184,047,198.29
  5. Step 5: Solve for x
    x = 7,184,047,198.29/92,115.60
  6. Step 6: Final answer
    x = 77,989.47

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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.