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Finding the Fourth Proportional to 86,195.43, 129,294.50 and 27,031.61

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Solution

The fourth proportional to 86,195.43, 129,294.50 and 27,031.61 is: 40,547.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,195.43 : 129,294.50 = 27,031.61 : x
  2. Step 2: Convert to fraction form
    86,195.43/129,294.50 = 27,031.61/x
  3. Step 3: Cross multiply
    86,195.43x = 129,294.50 × 27,031.61
  4. Step 4: Simplify right side
    86,195.43x = 3,495,037,717.51
  5. Step 5: Solve for x
    x = 3,495,037,717.51/86,195.43
  6. Step 6: Final answer
    x = 40,547.83

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.