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Finding the Fourth Proportional to 92,351.92, 138,418.48 and 42,389.92

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Solution

The fourth proportional to 92,351.92, 138,418.48 and 42,389.92 is: 63,534.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,351.92 : 138,418.48 = 42,389.92 : x
  2. Step 2: Convert to fraction form
    92,351.92/138,418.48 = 42,389.92/x
  3. Step 3: Cross multiply
    92,351.92x = 138,418.48 × 42,389.92
  4. Step 4: Simplify right side
    92,351.92x = 5,867,548,293.72
  5. Step 5: Solve for x
    x = 5,867,548,293.72/92,351.92
  6. Step 6: Final answer
    x = 63,534.66

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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.