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Finding the Fourth Proportional to 56,754.88, 85,184.78 and 28,694.68

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Solution

The fourth proportional to 56,754.88, 85,184.78 and 28,694.68 is: 43,068.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,754.88 : 85,184.78 = 28,694.68 : x
  2. Step 2: Convert to fraction form
    56,754.88/85,184.78 = 28,694.68/x
  3. Step 3: Cross multiply
    56,754.88x = 85,184.78 × 28,694.68
  4. Step 4: Simplify right side
    56,754.88x = 2,444,350,002.97
  5. Step 5: Solve for x
    x = 2,444,350,002.97/56,754.88
  6. Step 6: Final answer
    x = 43,068.54

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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.