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Finding the Fourth Proportional to 92,454.60, 138,330.90 and 61,350.60

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Solution

The fourth proportional to 92,454.60, 138,330.90 and 61,350.60 is: 91,792.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,454.60 : 138,330.90 = 61,350.60 : x
  2. Step 2: Convert to fraction form
    92,454.60/138,330.90 = 61,350.60/x
  3. Step 3: Cross multiply
    92,454.60x = 138,330.90 × 61,350.60
  4. Step 4: Simplify right side
    92,454.60x = 8,486,683,713.54
  5. Step 5: Solve for x
    x = 8,486,683,713.54/92,454.60
  6. Step 6: Final answer
    x = 91,792.99

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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.