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Finding the Fourth Proportional to 367,643.78, 551,521.68 and 187,630.90

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Solution

The fourth proportional to 367,643.78, 551,521.68 and 187,630.90 is: 281,474.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,643.78 : 551,521.68 = 187,630.90 : x
  2. Step 2: Convert to fraction form
    367,643.78/551,521.68 = 187,630.90/x
  3. Step 3: Cross multiply
    367,643.78x = 551,521.68 × 187,630.90
  4. Step 4: Simplify right side
    367,643.78x = 103,482,509,187.91
  5. Step 5: Solve for x
    x = 103,482,509,187.91/367,643.78
  6. Step 6: Final answer
    x = 281,474.94

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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.