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Finding the Fourth Proportional to 56,011.48, 84,028.74 and 38,489.56

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Solution

The fourth proportional to 56,011.48, 84,028.74 and 38,489.56 is: 57,742.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,011.48 : 84,028.74 = 38,489.56 : x
  2. Step 2: Convert to fraction form
    56,011.48/84,028.74 = 38,489.56/x
  3. Step 3: Cross multiply
    56,011.48x = 84,028.74 × 38,489.56
  4. Step 4: Simplify right side
    56,011.48x = 3,234,229,229.95
  5. Step 5: Solve for x
    x = 3,234,229,229.95/56,011.48
  6. Step 6: Final answer
    x = 57,742.26

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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.