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Finding the Fourth Proportional to 71,046.58, 98,044.29 and 39,215.49

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Solution

The fourth proportional to 71,046.58, 98,044.29 and 39,215.49 is: 54,117.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,046.58 : 98,044.29 = 39,215.49 : x
  2. Step 2: Convert to fraction form
    71,046.58/98,044.29 = 39,215.49/x
  3. Step 3: Cross multiply
    71,046.58x = 98,044.29 × 39,215.49
  4. Step 4: Simplify right side
    71,046.58x = 3,844,854,874.05
  5. Step 5: Solve for x
    x = 3,844,854,874.05/71,046.58
  6. Step 6: Final answer
    x = 54,117.38

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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.