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Finding the Fourth Proportional to 86,302.36, 129,266.61 and 41,836.11

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Solution

The fourth proportional to 86,302.36, 129,266.61 and 41,836.11 is: 62,663.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,302.36 : 129,266.61 = 41,836.11 : x
  2. Step 2: Convert to fraction form
    86,302.36/129,266.61 = 41,836.11/x
  3. Step 3: Cross multiply
    86,302.36x = 129,266.61 × 41,836.11
  4. Step 4: Simplify right side
    86,302.36x = 5,408,012,115.29
  5. Step 5: Solve for x
    x = 5,408,012,115.29/86,302.36
  6. Step 6: Final answer
    x = 62,663.55

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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.