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Finding the Fourth Proportional to 214,960.80, 322,441.20 and 83,632.80

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Solution

The fourth proportional to 214,960.80, 322,441.20 and 83,632.80 is: 125,449.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,960.80 : 322,441.20 = 83,632.80 : x
  2. Step 2: Convert to fraction form
    214,960.80/322,441.20 = 83,632.80/x
  3. Step 3: Cross multiply
    214,960.80x = 322,441.20 × 83,632.80
  4. Step 4: Simplify right side
    214,960.80x = 26,966,660,391.36
  5. Step 5: Solve for x
    x = 26,966,660,391.36/214,960.80
  6. Step 6: Final answer
    x = 125,449.20

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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.