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Finding the Fourth Proportional to 231,620.80, 346,912.80 and 178,859.20

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Solution

The fourth proportional to 231,620.80, 346,912.80 and 178,859.20 is: 267,888.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,620.80 : 346,912.80 = 178,859.20 : x
  2. Step 2: Convert to fraction form
    231,620.80/346,912.80 = 178,859.20/x
  3. Step 3: Cross multiply
    231,620.80x = 346,912.80 × 178,859.20
  4. Step 4: Simplify right side
    231,620.80x = 62,048,545,877.76
  5. Step 5: Solve for x
    x = 62,048,545,877.76/231,620.80
  6. Step 6: Final answer
    x = 267,888.49

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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.