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Finding the Fourth Proportional to 136,246.80, 204,224.40 and 61,354.20

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Solution

The fourth proportional to 136,246.80, 204,224.40 and 61,354.20 is: 91,965.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,246.80 : 204,224.40 = 61,354.20 : x
  2. Step 2: Convert to fraction form
    136,246.80/204,224.40 = 61,354.20/x
  3. Step 3: Cross multiply
    136,246.80x = 204,224.40 × 61,354.20
  4. Step 4: Simplify right side
    136,246.80x = 12,530,024,682.48
  5. Step 5: Solve for x
    x = 12,530,024,682.48/136,246.80
  6. Step 6: Final answer
    x = 91,965.64

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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.