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Finding the Fourth Proportional to 136,627.26, 204,965.60 and 61,782.68

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Solution

The fourth proportional to 136,627.26, 204,965.60 and 61,782.68 is: 92,685.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,627.26 : 204,965.60 = 61,782.68 : x
  2. Step 2: Convert to fraction form
    136,627.26/204,965.60 = 61,782.68/x
  3. Step 3: Cross multiply
    136,627.26x = 204,965.60 × 61,782.68
  4. Step 4: Simplify right side
    136,627.26x = 12,663,322,742.07
  5. Step 5: Solve for x
    x = 12,663,322,742.07/136,627.26
  6. Step 6: Final answer
    x = 92,685.18

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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.