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Finding the Fourth Proportional to 79,734.41, 119,601.74 and 74,862.87

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Solution

The fourth proportional to 79,734.41, 119,601.74 and 74,862.87 is: 112,294.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,734.41 : 119,601.74 = 74,862.87 : x
  2. Step 2: Convert to fraction form
    79,734.41/119,601.74 = 74,862.87/x
  3. Step 3: Cross multiply
    79,734.41x = 119,601.74 × 74,862.87
  4. Step 4: Simplify right side
    79,734.41x = 8,953,729,139.08
  5. Step 5: Solve for x
    x = 8,953,729,139.08/79,734.41
  6. Step 6: Final answer
    x = 112,294.42

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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.