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Finding the Fourth Proportional to 61,158.79, 84,398.11 and 35,679.97

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Solution

The fourth proportional to 61,158.79, 84,398.11 and 35,679.97 is: 49,237.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,158.79 : 84,398.11 = 35,679.97 : x
  2. Step 2: Convert to fraction form
    61,158.79/84,398.11 = 35,679.97/x
  3. Step 3: Cross multiply
    61,158.79x = 84,398.11 × 35,679.97
  4. Step 4: Simplify right side
    61,158.79x = 3,011,322,032.86
  5. Step 5: Solve for x
    x = 3,011,322,032.86/61,158.79
  6. Step 6: Final answer
    x = 49,237.76

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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.