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Finding the Fourth Proportional to 58,754.52, 88,131.78 and 21,319.56

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Solution

The fourth proportional to 58,754.52, 88,131.78 and 21,319.56 is: 31,979.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,754.52 : 88,131.78 = 21,319.56 : x
  2. Step 2: Convert to fraction form
    58,754.52/88,131.78 = 21,319.56/x
  3. Step 3: Cross multiply
    58,754.52x = 88,131.78 × 21,319.56
  4. Step 4: Simplify right side
    58,754.52x = 1,878,930,771.62
  5. Step 5: Solve for x
    x = 1,878,930,771.62/58,754.52
  6. Step 6: Final answer
    x = 31,979.34

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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.