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Finding the Fourth Proportional to 92,288.46, 138,318.48 and 65,591.91

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Solution

The fourth proportional to 92,288.46, 138,318.48 and 65,591.91 is: 98,306.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,288.46 : 138,318.48 = 65,591.91 : x
  2. Step 2: Convert to fraction form
    92,288.46/138,318.48 = 65,591.91/x
  3. Step 3: Cross multiply
    92,288.46x = 138,318.48 × 65,591.91
  4. Step 4: Simplify right side
    92,288.46x = 9,072,573,291.50
  5. Step 5: Solve for x
    x = 9,072,573,291.50/92,288.46
  6. Step 6: Final answer
    x = 98,306.69

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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.