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Finding the Fourth Proportional to 67,912.66, 93,724.02 and 39,237.90

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Solution

The fourth proportional to 67,912.66, 93,724.02 and 39,237.90 is: 54,150.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,912.66 : 93,724.02 = 39,237.90 : x
  2. Step 2: Convert to fraction form
    67,912.66/93,724.02 = 39,237.90/x
  3. Step 3: Cross multiply
    67,912.66x = 93,724.02 × 39,237.90
  4. Step 4: Simplify right side
    67,912.66x = 3,677,533,255.74
  5. Step 5: Solve for x
    x = 3,677,533,255.74/67,912.66
  6. Step 6: Final answer
    x = 54,150.92

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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.