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Finding the Fourth Proportional to 71,225.68, 98,195.25 and 45,687.71

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Solution

The fourth proportional to 71,225.68, 98,195.25 and 45,687.71 is: 62,987.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,225.68 : 98,195.25 = 45,687.71 : x
  2. Step 2: Convert to fraction form
    71,225.68/98,195.25 = 45,687.71/x
  3. Step 3: Cross multiply
    71,225.68x = 98,195.25 × 45,687.71
  4. Step 4: Simplify right side
    71,225.68x = 4,486,316,105.38
  5. Step 5: Solve for x
    x = 4,486,316,105.38/71,225.68
  6. Step 6: Final answer
    x = 62,987.34

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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.