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Finding the Fourth Proportional to 60,475.20, 90,712.80 and 41,812.80

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Solution

The fourth proportional to 60,475.20, 90,712.80 and 41,812.80 is: 62,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,475.20 : 90,712.80 = 41,812.80 : x
  2. Step 2: Convert to fraction form
    60,475.20/90,712.80 = 41,812.80/x
  3. Step 3: Cross multiply
    60,475.20x = 90,712.80 × 41,812.80
  4. Step 4: Simplify right side
    60,475.20x = 3,792,956,163.84
  5. Step 5: Solve for x
    x = 3,792,956,163.84/60,475.20
  6. Step 6: Final answer
    x = 62,719.20

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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.