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Finding the Fourth Proportional to 61,982.32, 85,532.13 and 33,687.82

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Solution

The fourth proportional to 61,982.32, 85,532.13 and 33,687.82 is: 46,487.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,982.32 : 85,532.13 = 33,687.82 : x
  2. Step 2: Convert to fraction form
    61,982.32/85,532.13 = 33,687.82/x
  3. Step 3: Cross multiply
    61,982.32x = 85,532.13 × 33,687.82
  4. Step 4: Simplify right side
    61,982.32x = 2,881,390,999.66
  5. Step 5: Solve for x
    x = 2,881,390,999.66/61,982.32
  6. Step 6: Final answer
    x = 46,487.30

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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.