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Finding the Fourth Proportional to 110,820.60, 166,121.55 and 54,614.70

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Solution

The fourth proportional to 110,820.60, 166,121.55 and 54,614.70 is: 81,868.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,820.60 : 166,121.55 = 54,614.70 : x
  2. Step 2: Convert to fraction form
    110,820.60/166,121.55 = 54,614.70/x
  3. Step 3: Cross multiply
    110,820.60x = 166,121.55 × 54,614.70
  4. Step 4: Simplify right side
    110,820.60x = 9,072,678,616.79
  5. Step 5: Solve for x
    x = 9,072,678,616.79/110,820.60
  6. Step 6: Final answer
    x = 81,868.16

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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.