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Finding the Fourth Proportional to 415,957.40, 623,936.10 and 227,000.60

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Solution

The fourth proportional to 415,957.40, 623,936.10 and 227,000.60 is: 340,500.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,957.40 : 623,936.10 = 227,000.60 : x
  2. Step 2: Convert to fraction form
    415,957.40/623,936.10 = 227,000.60/x
  3. Step 3: Cross multiply
    415,957.40x = 623,936.10 × 227,000.60
  4. Step 4: Simplify right side
    415,957.40x = 141,633,869,061.66
  5. Step 5: Solve for x
    x = 141,633,869,061.66/415,957.40
  6. Step 6: Final answer
    x = 340,500.90

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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.