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Finding the Fourth Proportional to 92,757.60, 138,887.10 and 76,316.04

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Solution

The fourth proportional to 92,757.60, 138,887.10 and 76,316.04 is: 114,268.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,757.60 : 138,887.10 = 76,316.04 : x
  2. Step 2: Convert to fraction form
    92,757.60/138,887.10 = 76,316.04/x
  3. Step 3: Cross multiply
    92,757.60x = 138,887.10 × 76,316.04
  4. Step 4: Simplify right side
    92,757.60x = 10,599,313,479.08
  5. Step 5: Solve for x
    x = 10,599,313,479.08/92,757.60
  6. Step 6: Final answer
    x = 114,268.95

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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.