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Finding the Fourth Proportional to 81,095.01, 111,872.28 and 50,865.20

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Solution

The fourth proportional to 81,095.01, 111,872.28 and 50,865.20 is: 70,169.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,095.01 : 111,872.28 = 50,865.20 : x
  2. Step 2: Convert to fraction form
    81,095.01/111,872.28 = 50,865.20/x
  3. Step 3: Cross multiply
    81,095.01x = 111,872.28 × 50,865.20
  4. Step 4: Simplify right side
    81,095.01x = 5,690,405,337.29
  5. Step 5: Solve for x
    x = 5,690,405,337.29/81,095.01
  6. Step 6: Final answer
    x = 70,169.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.