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Finding the Fourth Proportional to 58,679.64, 80,982.38 and 33,186.51

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Solution

The fourth proportional to 58,679.64, 80,982.38 and 33,186.51 is: 45,799.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,679.64 : 80,982.38 = 33,186.51 : x
  2. Step 2: Convert to fraction form
    58,679.64/80,982.38 = 33,186.51/x
  3. Step 3: Cross multiply
    58,679.64x = 80,982.38 × 33,186.51
  4. Step 4: Simplify right side
    58,679.64x = 2,687,522,397.76
  5. Step 5: Solve for x
    x = 2,687,522,397.76/58,679.64
  6. Step 6: Final answer
    x = 45,799.91

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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.