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Finding the Fourth Proportional to 6,915.80, 9,544.61 and 3,932.08

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Solution

The fourth proportional to 6,915.80, 9,544.61 and 3,932.08 is: 5,426.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,915.80 : 9,544.61 = 3,932.08 : x
  2. Step 2: Convert to fraction form
    6,915.80/9,544.61 = 3,932.08/x
  3. Step 3: Cross multiply
    6,915.80x = 9,544.61 × 3,932.08
  4. Step 4: Simplify right side
    6,915.80x = 37,530,102.71
  5. Step 5: Solve for x
    x = 37,530,102.71/6,915.80
  6. Step 6: Final answer
    x = 5,426.72

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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.