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Finding the Fourth Proportional to 81,191.58, 121,863.30 and 41,239.14

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Solution

The fourth proportional to 81,191.58, 121,863.30 and 41,239.14 is: 61,897.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,191.58 : 121,863.30 = 41,239.14 : x
  2. Step 2: Convert to fraction form
    81,191.58/121,863.30 = 41,239.14/x
  3. Step 3: Cross multiply
    81,191.58x = 121,863.30 × 41,239.14
  4. Step 4: Simplify right side
    81,191.58x = 5,025,537,689.56
  5. Step 5: Solve for x
    x = 5,025,537,689.56/81,191.58
  6. Step 6: Final answer
    x = 61,897.28

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1.5x scale

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.