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Finding the Fourth Proportional to 61,041.87, 91,398.75 and 38,734.47

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Solution

The fourth proportional to 61,041.87, 91,398.75 and 38,734.47 is: 57,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,041.87 : 91,398.75 = 38,734.47 : x
  2. Step 2: Convert to fraction form
    61,041.87/91,398.75 = 38,734.47/x
  3. Step 3: Cross multiply
    61,041.87x = 91,398.75 × 38,734.47
  4. Step 4: Simplify right side
    61,041.87x = 3,540,282,139.91
  5. Step 5: Solve for x
    x = 3,540,282,139.91/61,041.87
  6. Step 6: Final answer
    x = 57,997.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.