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Finding the Fourth Proportional to 367,999.70, 551,343.45 and 311,575.10

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Solution

The fourth proportional to 367,999.70, 551,343.45 and 311,575.10 is: 466,807.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,999.70 : 551,343.45 = 311,575.10 : x
  2. Step 2: Convert to fraction form
    367,999.70/551,343.45 = 311,575.10/x
  3. Step 3: Cross multiply
    367,999.70x = 551,343.45 × 311,575.10
  4. Step 4: Simplify right side
    367,999.70x = 171,784,890,568.10
  5. Step 5: Solve for x
    x = 171,784,890,568.10/367,999.70
  6. Step 6: Final answer
    x = 466,807.15

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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.