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Finding the Fourth Proportional to 372,912.90, 559,369.35 and 231,195.30

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Solution

The fourth proportional to 372,912.90, 559,369.35 and 231,195.30 is: 346,792.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,912.90 : 559,369.35 = 231,195.30 : x
  2. Step 2: Convert to fraction form
    372,912.90/559,369.35 = 231,195.30/x
  3. Step 3: Cross multiply
    372,912.90x = 559,369.35 × 231,195.30
  4. Step 4: Simplify right side
    372,912.90x = 129,323,564,684.06
  5. Step 5: Solve for x
    x = 129,323,564,684.06/372,912.90
  6. Step 6: Final answer
    x = 346,792.95

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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.