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Finding the Fourth Proportional to 71,962.88, 99,371.44 and 45,151.48

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Solution

The fourth proportional to 71,962.88, 99,371.44 and 45,151.48 is: 62,348.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,962.88 : 99,371.44 = 45,151.48 : x
  2. Step 2: Convert to fraction form
    71,962.88/99,371.44 = 45,151.48/x
  3. Step 3: Cross multiply
    71,962.88x = 99,371.44 × 45,151.48
  4. Step 4: Simplify right side
    71,962.88x = 4,486,767,585.73
  5. Step 5: Solve for x
    x = 4,486,767,585.73/71,962.88
  6. Step 6: Final answer
    x = 62,348.36

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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.