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Finding the Fourth Proportional to 20,566.71, 30,808.96 and 9,458.17

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Solution

The fourth proportional to 20,566.71, 30,808.96 and 9,458.17 is: 14,168.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.71 : 30,808.96 = 9,458.17 : x
  2. Step 2: Convert to fraction form
    20,566.71/30,808.96 = 9,458.17/x
  3. Step 3: Cross multiply
    20,566.71x = 30,808.96 × 9,458.17
  4. Step 4: Simplify right side
    20,566.71x = 291,396,280.54
  5. Step 5: Solve for x
    x = 291,396,280.54/20,566.71
  6. Step 6: Final answer
    x = 14,168.35

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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.