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Finding the Fourth Proportional to 92,472.90, 138,597.81 and 45,016.86

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Solution

The fourth proportional to 92,472.90, 138,597.81 and 45,016.86 is: 67,470.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,472.90 : 138,597.81 = 45,016.86 : x
  2. Step 2: Convert to fraction form
    92,472.90/138,597.81 = 45,016.86/x
  3. Step 3: Cross multiply
    92,472.90x = 138,597.81 × 45,016.86
  4. Step 4: Simplify right side
    92,472.90x = 6,239,238,209.08
  5. Step 5: Solve for x
    x = 6,239,238,209.08/92,472.90
  6. Step 6: Final answer
    x = 67,470.99

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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.