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Finding the Fourth Proportional to 48,674.61, 67,170.56 and 28,258.57

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Solution

The fourth proportional to 48,674.61, 67,170.56 and 28,258.57 is: 38,996.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,674.61 : 67,170.56 = 28,258.57 : x
  2. Step 2: Convert to fraction form
    48,674.61/67,170.56 = 28,258.57/x
  3. Step 3: Cross multiply
    48,674.61x = 67,170.56 × 28,258.57
  4. Step 4: Simplify right side
    48,674.61x = 1,898,143,635.85
  5. Step 5: Solve for x
    x = 1,898,143,635.85/48,674.61
  6. Step 6: Final answer
    x = 38,996.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.