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Finding the Fourth Proportional to 86,262.65, 129,317.02 and 33,659.90

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Solution

The fourth proportional to 86,262.65, 129,317.02 and 33,659.90 is: 50,459.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,262.65 : 129,317.02 = 33,659.90 : x
  2. Step 2: Convert to fraction form
    86,262.65/129,317.02 = 33,659.90/x
  3. Step 3: Cross multiply
    86,262.65x = 129,317.02 × 33,659.90
  4. Step 4: Simplify right side
    86,262.65x = 4,352,797,961.50
  5. Step 5: Solve for x
    x = 4,352,797,961.50/86,262.65
  6. Step 6: Final answer
    x = 50,459.82

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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.