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Finding the Fourth Proportional to 368,521.10, 551,469.45 and 255,671.90

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Solution

The fourth proportional to 368,521.10, 551,469.45 and 255,671.90 is: 382,597.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,521.10 : 551,469.45 = 255,671.90 : x
  2. Step 2: Convert to fraction form
    368,521.10/551,469.45 = 255,671.90/x
  3. Step 3: Cross multiply
    368,521.10x = 551,469.45 × 255,671.90
  4. Step 4: Simplify right side
    368,521.10x = 140,995,242,073.46
  5. Step 5: Solve for x
    x = 140,995,242,073.46/368,521.10
  6. Step 6: Final answer
    x = 382,597.47

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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.