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Finding the Fourth Proportional to 8,982.81, 12,394.80 and 5,003.82

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Solution

The fourth proportional to 8,982.81, 12,394.80 and 5,003.82 is: 6,904.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,982.81 : 12,394.80 = 5,003.82 : x
  2. Step 2: Convert to fraction form
    8,982.81/12,394.80 = 5,003.82/x
  3. Step 3: Cross multiply
    8,982.81x = 12,394.80 × 5,003.82
  4. Step 4: Simplify right side
    8,982.81x = 62,021,348.14
  5. Step 5: Solve for x
    x = 62,021,348.14/8,982.81
  6. Step 6: Final answer
    x = 6,904.45

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1.5x scale

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.