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Finding the Fourth Proportional to 17,332.65, 25,990.74 and 8,557.31

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Solution

The fourth proportional to 17,332.65, 25,990.74 and 8,557.31 is: 12,831.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,332.65 : 25,990.74 = 8,557.31 : x
  2. Step 2: Convert to fraction form
    17,332.65/25,990.74 = 8,557.31/x
  3. Step 3: Cross multiply
    17,332.65x = 25,990.74 × 8,557.31
  4. Step 4: Simplify right side
    17,332.65x = 222,410,884.29
  5. Step 5: Solve for x
    x = 222,410,884.29/17,332.65
  6. Step 6: Final answer
    x = 12,831.90

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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.