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Finding the Fourth Proportional to 71,195.60, 98,251.90 and 39,366.56

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Solution

The fourth proportional to 71,195.60, 98,251.90 and 39,366.56 is: 54,326.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,195.60 : 98,251.90 = 39,366.56 : x
  2. Step 2: Convert to fraction form
    71,195.60/98,251.90 = 39,366.56/x
  3. Step 3: Cross multiply
    71,195.60x = 98,251.90 × 39,366.56
  4. Step 4: Simplify right side
    71,195.60x = 3,867,839,316.46
  5. Step 5: Solve for x
    x = 3,867,839,316.46/71,195.60
  6. Step 6: Final answer
    x = 54,326.94

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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.