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Finding the Fourth Proportional to 399,441.54, 551,156.22 and 227,349.30

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Solution

The fourth proportional to 399,441.54, 551,156.22 and 227,349.30 is: 313,700.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,441.54 : 551,156.22 = 227,349.30 : x
  2. Step 2: Convert to fraction form
    399,441.54/551,156.22 = 227,349.30/x
  3. Step 3: Cross multiply
    399,441.54x = 551,156.22 × 227,349.30
  4. Step 4: Simplify right side
    399,441.54x = 125,304,980,807.65
  5. Step 5: Solve for x
    x = 125,304,980,807.65/399,441.54
  6. Step 6: Final answer
    x = 313,700.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.