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Finding the Fourth Proportional to 92,479.92, 138,722.04 and 42,601.74

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Solution

The fourth proportional to 92,479.92, 138,722.04 and 42,601.74 is: 63,903.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,479.92 : 138,722.04 = 42,601.74 : x
  2. Step 2: Convert to fraction form
    92,479.92/138,722.04 = 42,601.74/x
  3. Step 3: Cross multiply
    92,479.92x = 138,722.04 × 42,601.74
  4. Step 4: Simplify right side
    92,479.92x = 5,909,800,280.35
  5. Step 5: Solve for x
    x = 5,909,800,280.35/92,479.92
  6. Step 6: Final answer
    x = 63,903.61

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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.