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Finding the Fourth Proportional to 248,874.20, 373,311.30 and 91,215.80

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Solution

The fourth proportional to 248,874.20, 373,311.30 and 91,215.80 is: 136,823.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,874.20 : 373,311.30 = 91,215.80 : x
  2. Step 2: Convert to fraction form
    248,874.20/373,311.30 = 91,215.80/x
  3. Step 3: Cross multiply
    248,874.20x = 373,311.30 × 91,215.80
  4. Step 4: Simplify right side
    248,874.20x = 34,051,888,878.54
  5. Step 5: Solve for x
    x = 34,051,888,878.54/248,874.20
  6. Step 6: Final answer
    x = 136,823.70

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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.