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Finding the Fourth Proportional to 71,886.05, 107,877.06 and 25,138.92

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Solution

The fourth proportional to 71,886.05, 107,877.06 and 25,138.92 is: 37,725.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,886.05 : 107,877.06 = 25,138.92 : x
  2. Step 2: Convert to fraction form
    71,886.05/107,877.06 = 25,138.92/x
  3. Step 3: Cross multiply
    71,886.05x = 107,877.06 × 25,138.92
  4. Step 4: Simplify right side
    71,886.05x = 2,711,912,781.18
  5. Step 5: Solve for x
    x = 2,711,912,781.18/71,886.05
  6. Step 6: Final answer
    x = 37,725.16

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1.5x scale

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.