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Finding the Fourth Proportional to 658,141.20, 987,211.80 and 237,718.80

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Solution

The fourth proportional to 658,141.20, 987,211.80 and 237,718.80 is: 356,578.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,141.20 : 987,211.80 = 237,718.80 : x
  2. Step 2: Convert to fraction form
    658,141.20/987,211.80 = 237,718.80/x
  3. Step 3: Cross multiply
    658,141.20x = 987,211.80 × 237,718.80
  4. Step 4: Simplify right side
    658,141.20x = 234,678,804,441.84
  5. Step 5: Solve for x
    x = 234,678,804,441.84/658,141.20
  6. Step 6: Final answer
    x = 356,578.20

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Double scale
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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.