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Finding the Fourth Proportional to 58,031.97, 87,042.15 and 18,578.49

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Solution

The fourth proportional to 58,031.97, 87,042.15 and 18,578.49 is: 27,865.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,031.97 : 87,042.15 = 18,578.49 : x
  2. Step 2: Convert to fraction form
    58,031.97/87,042.15 = 18,578.49/x
  3. Step 3: Cross multiply
    58,031.97x = 87,042.15 × 18,578.49
  4. Step 4: Simplify right side
    58,031.97x = 1,617,111,713.35
  5. Step 5: Solve for x
    x = 1,617,111,713.35/58,031.97
  6. Step 6: Final answer
    x = 27,865.88

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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.