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Finding the Fourth Proportional to 38,867.80, 58,269.70 and 16,698.20

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Solution

The fourth proportional to 38,867.80, 58,269.70 and 16,698.20 is: 25,033.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,867.80 : 58,269.70 = 16,698.20 : x
  2. Step 2: Convert to fraction form
    38,867.80/58,269.70 = 16,698.20/x
  3. Step 3: Cross multiply
    38,867.80x = 58,269.70 × 16,698.20
  4. Step 4: Simplify right side
    38,867.80x = 972,999,104.54
  5. Step 5: Solve for x
    x = 972,999,104.54/38,867.80
  6. Step 6: Final answer
    x = 25,033.55

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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.