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Finding the Fourth Proportional to 67,912.08, 93,720.20 and 38,104.08

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Solution

The fourth proportional to 67,912.08, 93,720.20 and 38,104.08 is: 52,584.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,912.08 : 93,720.20 = 38,104.08 : x
  2. Step 2: Convert to fraction form
    67,912.08/93,720.20 = 38,104.08/x
  3. Step 3: Cross multiply
    67,912.08x = 93,720.20 × 38,104.08
  4. Step 4: Simplify right side
    67,912.08x = 3,571,121,998.42
  5. Step 5: Solve for x
    x = 3,571,121,998.42/67,912.08
  6. Step 6: Final answer
    x = 52,584.49

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1.5x scale

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.