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Finding the Fourth Proportional to 81,161.31, 112,000.43 and 45,351.62

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Solution

The fourth proportional to 81,161.31, 112,000.43 and 45,351.62 is: 62,584.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,161.31 : 112,000.43 = 45,351.62 : x
  2. Step 2: Convert to fraction form
    81,161.31/112,000.43 = 45,351.62/x
  3. Step 3: Cross multiply
    81,161.31x = 112,000.43 × 45,351.62
  4. Step 4: Simplify right side
    81,161.31x = 5,079,400,154.44
  5. Step 5: Solve for x
    x = 5,079,400,154.44/81,161.31
  6. Step 6: Final answer
    x = 62,584.01

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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.