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Finding the Fourth Proportional to 72,331.74, 108,618.30 and 48,790.98

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Solution

The fourth proportional to 72,331.74, 108,618.30 and 48,790.98 is: 73,267.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,331.74 : 108,618.30 = 48,790.98 : x
  2. Step 2: Convert to fraction form
    72,331.74/108,618.30 = 48,790.98/x
  3. Step 3: Cross multiply
    72,331.74x = 108,618.30 × 48,790.98
  4. Step 4: Simplify right side
    72,331.74x = 5,299,593,302.93
  5. Step 5: Solve for x
    x = 5,299,593,302.93/72,331.74
  6. Step 6: Final answer
    x = 73,267.88

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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.