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Finding the Fourth Proportional to 248,961.40, 373,587.90 and 91,205.80

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Solution

The fourth proportional to 248,961.40, 373,587.90 and 91,205.80 is: 136,862.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,961.40 : 373,587.90 = 91,205.80 : x
  2. Step 2: Convert to fraction form
    248,961.40/373,587.90 = 91,205.80/x
  3. Step 3: Cross multiply
    248,961.40x = 373,587.90 × 91,205.80
  4. Step 4: Simplify right side
    248,961.40x = 34,073,383,289.82
  5. Step 5: Solve for x
    x = 34,073,383,289.82/248,961.40
  6. Step 6: Final answer
    x = 136,862.11

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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.