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Finding the Fourth Proportional to 92,313.60, 138,371.52 and 65,938.32

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Solution

The fourth proportional to 92,313.60, 138,371.52 and 65,938.32 is: 98,836.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,313.60 : 138,371.52 = 65,938.32 : x
  2. Step 2: Convert to fraction form
    92,313.60/138,371.52 = 65,938.32/x
  3. Step 3: Cross multiply
    92,313.60x = 138,371.52 × 65,938.32
  4. Step 4: Simplify right side
    92,313.60x = 9,123,985,564.65
  5. Step 5: Solve for x
    x = 9,123,985,564.65/92,313.60
  6. Step 6: Final answer
    x = 98,836.85

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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.