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Finding the Fourth Proportional to 503,205.80, 754,905.90 and 148,231.40

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Solution

The fourth proportional to 503,205.80, 754,905.90 and 148,231.40 is: 222,375.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,205.80 : 754,905.90 = 148,231.40 : x
  2. Step 2: Convert to fraction form
    503,205.80/754,905.90 = 148,231.40/x
  3. Step 3: Cross multiply
    503,205.80x = 754,905.90 × 148,231.40
  4. Step 4: Simplify right side
    503,205.80x = 111,900,758,425.26
  5. Step 5: Solve for x
    x = 111,900,758,425.26/503,205.80
  6. Step 6: Final answer
    x = 222,375.73

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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.