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Finding the Fourth Proportional to 60,643.85, 90,961.50 and 22,685.87

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Solution

The fourth proportional to 60,643.85, 90,961.50 and 22,685.87 is: 34,027.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,643.85 : 90,961.50 = 22,685.87 : x
  2. Step 2: Convert to fraction form
    60,643.85/90,961.50 = 22,685.87/x
  3. Step 3: Cross multiply
    60,643.85x = 90,961.50 × 22,685.87
  4. Step 4: Simplify right side
    60,643.85x = 2,063,541,076.48
  5. Step 5: Solve for x
    x = 2,063,541,076.48/60,643.85
  6. Step 6: Final answer
    x = 34,027.21

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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.