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Finding the Fourth Proportional to 248,873.70, 373,310.55 and 91,215.30

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Solution

The fourth proportional to 248,873.70, 373,310.55 and 91,215.30 is: 136,822.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,873.70 : 373,310.55 = 91,215.30 : x
  2. Step 2: Convert to fraction form
    248,873.70/373,310.55 = 91,215.30/x
  3. Step 3: Cross multiply
    248,873.70x = 373,310.55 × 91,215.30
  4. Step 4: Simplify right side
    248,873.70x = 34,051,633,811.42
  5. Step 5: Solve for x
    x = 34,051,633,811.42/248,873.70
  6. Step 6: Final answer
    x = 136,822.95

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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.