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Finding the Fourth Proportional to 92,290.80, 138,342.24 and 42,336.48

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Solution

The fourth proportional to 92,290.80, 138,342.24 and 42,336.48 is: 63,461.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,290.80 : 138,342.24 = 42,336.48 : x
  2. Step 2: Convert to fraction form
    92,290.80/138,342.24 = 42,336.48/x
  3. Step 3: Cross multiply
    92,290.80x = 138,342.24 × 42,336.48
  4. Step 4: Simplify right side
    92,290.80x = 5,856,923,476.92
  5. Step 5: Solve for x
    x = 5,856,923,476.92/92,290.80
  6. Step 6: Final answer
    x = 63,461.62

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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.