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Finding the Fourth Proportional to 54,659.72, 82,034.14 and 28,371.98

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Solution

The fourth proportional to 54,659.72, 82,034.14 and 28,371.98 is: 42,581.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,659.72 : 82,034.14 = 28,371.98 : x
  2. Step 2: Convert to fraction form
    54,659.72/82,034.14 = 28,371.98/x
  3. Step 3: Cross multiply
    54,659.72x = 82,034.14 × 28,371.98
  4. Step 4: Simplify right side
    54,659.72x = 2,327,470,979.40
  5. Step 5: Solve for x
    x = 2,327,470,979.40/54,659.72
  6. Step 6: Final answer
    x = 42,581.10

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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.