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Finding the Fourth Proportional to 61,535.88, 84,935.33 and 40,079.10

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Solution

The fourth proportional to 61,535.88, 84,935.33 and 40,079.10 is: 55,319.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,535.88 : 84,935.33 = 40,079.10 : x
  2. Step 2: Convert to fraction form
    61,535.88/84,935.33 = 40,079.10/x
  3. Step 3: Cross multiply
    61,535.88x = 84,935.33 × 40,079.10
  4. Step 4: Simplify right side
    61,535.88x = 3,404,132,078.46
  5. Step 5: Solve for x
    x = 3,404,132,078.46/61,535.88
  6. Step 6: Final answer
    x = 55,319.47

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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.