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Finding the Fourth Proportional to 391,461.40, 587,192.10 and 233,997.40

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Solution

The fourth proportional to 391,461.40, 587,192.10 and 233,997.40 is: 350,996.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,461.40 : 587,192.10 = 233,997.40 : x
  2. Step 2: Convert to fraction form
    391,461.40/587,192.10 = 233,997.40/x
  3. Step 3: Cross multiply
    391,461.40x = 587,192.10 × 233,997.40
  4. Step 4: Simplify right side
    391,461.40x = 137,401,424,700.54
  5. Step 5: Solve for x
    x = 137,401,424,700.54/391,461.40
  6. Step 6: Final answer
    x = 350,996.10

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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.