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Finding the Fourth Proportional to 71,062.36, 98,066.36 and 39,231.52

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Solution

The fourth proportional to 71,062.36, 98,066.36 and 39,231.52 is: 54,139.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,062.36 : 98,066.36 = 39,231.52 : x
  2. Step 2: Convert to fraction form
    71,062.36/98,066.36 = 39,231.52/x
  3. Step 3: Cross multiply
    71,062.36x = 98,066.36 × 39,231.52
  4. Step 4: Simplify right side
    71,062.36x = 3,847,292,363.67
  5. Step 5: Solve for x
    x = 3,847,292,363.67/71,062.36
  6. Step 6: Final answer
    x = 54,139.66

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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.