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Finding the Fourth Proportional to 14,666.57, 20,239.89 and 7,952.20

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Solution

The fourth proportional to 14,666.57, 20,239.89 and 7,952.20 is: 10,974.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,666.57 : 20,239.89 = 7,952.20 : x
  2. Step 2: Convert to fraction form
    14,666.57/20,239.89 = 7,952.20/x
  3. Step 3: Cross multiply
    14,666.57x = 20,239.89 × 7,952.20
  4. Step 4: Simplify right side
    14,666.57x = 160,951,653.26
  5. Step 5: Solve for x
    x = 160,951,653.26/14,666.57
  6. Step 6: Final answer
    x = 10,974.05

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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.