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Finding the Fourth Proportional to 87,586.66, 120,872.01 and 53,594.54

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Solution

The fourth proportional to 87,586.66, 120,872.01 and 53,594.54 is: 73,961.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,586.66 : 120,872.01 = 53,594.54 : x
  2. Step 2: Convert to fraction form
    87,586.66/120,872.01 = 53,594.54/x
  3. Step 3: Cross multiply
    87,586.66x = 120,872.01 × 53,594.54
  4. Step 4: Simplify right side
    87,586.66x = 6,478,079,824.71
  5. Step 5: Solve for x
    x = 6,478,079,824.71/87,586.66
  6. Step 6: Final answer
    x = 73,961.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.