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Finding the Fourth Proportional to 231,744.80, 347,876.40 and 216,516.80

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Solution

The fourth proportional to 231,744.80, 347,876.40 and 216,516.80 is: 325,017.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,744.80 : 347,876.40 = 216,516.80 : x
  2. Step 2: Convert to fraction form
    231,744.80/347,876.40 = 216,516.80/x
  3. Step 3: Cross multiply
    231,744.80x = 347,876.40 × 216,516.80
  4. Step 4: Simplify right side
    231,744.80x = 75,321,084,923.52
  5. Step 5: Solve for x
    x = 75,321,084,923.52/231,744.80
  6. Step 6: Final answer
    x = 325,017.37

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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.