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Finding the Fourth Proportional to 136,611.70, 204,917.55 and 91,996.90

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Solution

The fourth proportional to 136,611.70, 204,917.55 and 91,996.90 is: 137,995.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,611.70 : 204,917.55 = 91,996.90 : x
  2. Step 2: Convert to fraction form
    136,611.70/204,917.55 = 91,996.90/x
  3. Step 3: Cross multiply
    136,611.70x = 204,917.55 × 91,996.90
  4. Step 4: Simplify right side
    136,611.70x = 18,851,779,355.60
  5. Step 5: Solve for x
    x = 18,851,779,355.60/136,611.70
  6. Step 6: Final answer
    x = 137,995.35

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1.5x scale

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.