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Finding the Fourth Proportional to 21,952.92, 32,932.59 and 7,158.20

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Solution

The fourth proportional to 21,952.92, 32,932.59 and 7,158.20 is: 10,738.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,952.92 : 32,932.59 = 7,158.20 : x
  2. Step 2: Convert to fraction form
    21,952.92/32,932.59 = 7,158.20/x
  3. Step 3: Cross multiply
    21,952.92x = 32,932.59 × 7,158.20
  4. Step 4: Simplify right side
    21,952.92x = 235,738,029.95
  5. Step 5: Solve for x
    x = 235,738,029.95/21,952.92
  6. Step 6: Final answer
    x = 10,738.35

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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.