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Finding the Fourth Proportional to 74,339.92, 111,512.40 and 26,931.16

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Solution

The fourth proportional to 74,339.92, 111,512.40 and 26,931.16 is: 40,397.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,339.92 : 111,512.40 = 26,931.16 : x
  2. Step 2: Convert to fraction form
    74,339.92/111,512.40 = 26,931.16/x
  3. Step 3: Cross multiply
    74,339.92x = 111,512.40 × 26,931.16
  4. Step 4: Simplify right side
    74,339.92x = 3,003,158,286.38
  5. Step 5: Solve for x
    x = 3,003,158,286.38/74,339.92
  6. Step 6: Final answer
    x = 40,397.65

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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.