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Finding the Fourth Proportional to 21,952.99, 32,932.94 and 7,158.47

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Solution

The fourth proportional to 21,952.99, 32,932.94 and 7,158.47 is: 10,738.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,952.99 : 32,932.94 = 7,158.47 : x
  2. Step 2: Convert to fraction form
    21,952.99/32,932.94 = 7,158.47/x
  3. Step 3: Cross multiply
    21,952.99x = 32,932.94 × 7,158.47
  4. Step 4: Simplify right side
    21,952.99x = 235,749,509.54
  5. Step 5: Solve for x
    x = 235,749,509.54/21,952.99
  6. Step 6: Final answer
    x = 10,738.83

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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.