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Finding the Fourth Proportional to 7,411.56, 11,118.78 and 3,952.68

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Solution

The fourth proportional to 7,411.56, 11,118.78 and 3,952.68 is: 5,929.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,411.56 : 11,118.78 = 3,952.68 : x
  2. Step 2: Convert to fraction form
    7,411.56/11,118.78 = 3,952.68/x
  3. Step 3: Cross multiply
    7,411.56x = 11,118.78 × 3,952.68
  4. Step 4: Simplify right side
    7,411.56x = 43,948,979.33
  5. Step 5: Solve for x
    x = 43,948,979.33/7,411.56
  6. Step 6: Final answer
    x = 5,929.79

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1.5x scale

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.