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Finding the Fourth Proportional to 6,982.68, 9,637.78 and 4,000.26

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Solution

The fourth proportional to 6,982.68, 9,637.78 and 4,000.26 is: 5,521.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,982.68 : 9,637.78 = 4,000.26 : x
  2. Step 2: Convert to fraction form
    6,982.68/9,637.78 = 4,000.26/x
  3. Step 3: Cross multiply
    6,982.68x = 9,637.78 × 4,000.26
  4. Step 4: Simplify right side
    6,982.68x = 38,553,625.82
  5. Step 5: Solve for x
    x = 38,553,625.82/6,982.68
  6. Step 6: Final answer
    x = 5,521.32

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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.