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Finding the Fourth Proportional to 71,585.03, 98,791.91 and 39,753.92

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Solution

The fourth proportional to 71,585.03, 98,791.91 and 39,753.92 is: 54,862.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,585.03 : 98,791.91 = 39,753.92 : x
  2. Step 2: Convert to fraction form
    71,585.03/98,791.91 = 39,753.92/x
  3. Step 3: Cross multiply
    71,585.03x = 98,791.91 × 39,753.92
  4. Step 4: Simplify right side
    71,585.03x = 3,927,365,686.79
  5. Step 5: Solve for x
    x = 3,927,365,686.79/71,585.03
  6. Step 6: Final answer
    x = 54,862.95

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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.