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Finding the Fourth Proportional to 131,665.76, 197,472.72 and 48,540.32

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Solution

The fourth proportional to 131,665.76, 197,472.72 and 48,540.32 is: 72,800.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,665.76 : 197,472.72 = 48,540.32 : x
  2. Step 2: Convert to fraction form
    131,665.76/197,472.72 = 48,540.32/x
  3. Step 3: Cross multiply
    131,665.76x = 197,472.72 × 48,540.32
  4. Step 4: Simplify right side
    131,665.76x = 9,585,389,020.07
  5. Step 5: Solve for x
    x = 9,585,389,020.07/131,665.76
  6. Step 6: Final answer
    x = 72,800.92

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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.