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Finding the Fourth Proportional to 60,916.80, 91,375.20 and 58,292.40

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Solution

The fourth proportional to 60,916.80, 91,375.20 and 58,292.40 is: 87,438.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,916.80 : 91,375.20 = 58,292.40 : x
  2. Step 2: Convert to fraction form
    60,916.80/91,375.20 = 58,292.40/x
  3. Step 3: Cross multiply
    60,916.80x = 91,375.20 × 58,292.40
  4. Step 4: Simplify right side
    60,916.80x = 5,326,479,708.48
  5. Step 5: Solve for x
    x = 5,326,479,708.48/60,916.80
  6. Step 6: Final answer
    x = 87,438.60

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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.