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Finding the Fourth Proportional to 17,221.08, 25,831.86 and 9,816.72

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Solution

The fourth proportional to 17,221.08, 25,831.86 and 9,816.72 is: 14,725.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,221.08 : 25,831.86 = 9,816.72 : x
  2. Step 2: Convert to fraction form
    17,221.08/25,831.86 = 9,816.72/x
  3. Step 3: Cross multiply
    17,221.08x = 25,831.86 × 9,816.72
  4. Step 4: Simplify right side
    17,221.08x = 253,584,136.70
  5. Step 5: Solve for x
    x = 253,584,136.70/17,221.08
  6. Step 6: Final answer
    x = 14,725.22

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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.