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Finding the Fourth Proportional to 92,160.56, 138,279.72 and 54,792.02

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Solution

The fourth proportional to 92,160.56, 138,279.72 and 54,792.02 is: 82,211.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,160.56 : 138,279.72 = 54,792.02 : x
  2. Step 2: Convert to fraction form
    92,160.56/138,279.72 = 54,792.02/x
  3. Step 3: Cross multiply
    92,160.56x = 138,279.72 × 54,792.02
  4. Step 4: Simplify right side
    92,160.56x = 7,576,625,183.83
  5. Step 5: Solve for x
    x = 7,576,625,183.83/92,160.56
  6. Step 6: Final answer
    x = 82,211.15

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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.