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Finding the Fourth Proportional to 658,640.70, 987,961.05 and 237,930.30

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Solution

The fourth proportional to 658,640.70, 987,961.05 and 237,930.30 is: 356,895.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,640.70 : 987,961.05 = 237,930.30 : x
  2. Step 2: Convert to fraction form
    658,640.70/987,961.05 = 237,930.30/x
  3. Step 3: Cross multiply
    658,640.70x = 987,961.05 × 237,930.30
  4. Step 4: Simplify right side
    658,640.70x = 235,065,869,014.82
  5. Step 5: Solve for x
    x = 235,065,869,014.82/658,640.70
  6. Step 6: Final answer
    x = 356,895.45

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Similar ratio
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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.