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Finding the Fourth Proportional to 8,708.38, 12,017.56 and 4,982.38

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Solution

The fourth proportional to 8,708.38, 12,017.56 and 4,982.38 is: 6,875.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,708.38 : 12,017.56 = 4,982.38 : x
  2. Step 2: Convert to fraction form
    8,708.38/12,017.56 = 4,982.38/x
  3. Step 3: Cross multiply
    8,708.38x = 12,017.56 × 4,982.38
  4. Step 4: Simplify right side
    8,708.38x = 59,876,050.59
  5. Step 5: Solve for x
    x = 59,876,050.59/8,708.38
  6. Step 6: Final answer
    x = 6,875.68

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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.