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Finding the Fourth Proportional to 67,872.66, 93,664.80 and 37,659.90

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Solution

The fourth proportional to 67,872.66, 93,664.80 and 37,659.90 is: 51,970.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,872.66 : 93,664.80 = 37,659.90 : x
  2. Step 2: Convert to fraction form
    67,872.66/93,664.80 = 37,659.90/x
  3. Step 3: Cross multiply
    67,872.66x = 93,664.80 × 37,659.90
  4. Step 4: Simplify right side
    67,872.66x = 3,527,407,001.52
  5. Step 5: Solve for x
    x = 3,527,407,001.52/67,872.66
  6. Step 6: Final answer
    x = 51,970.96

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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.