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Finding the Fourth Proportional to 136,817.52, 188,811.36 and 85,832.40

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Solution

The fourth proportional to 136,817.52, 188,811.36 and 85,832.40 is: 118,450.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,817.52 : 188,811.36 = 85,832.40 : x
  2. Step 2: Convert to fraction form
    136,817.52/188,811.36 = 85,832.40/x
  3. Step 3: Cross multiply
    136,817.52x = 188,811.36 × 85,832.40
  4. Step 4: Simplify right side
    136,817.52x = 16,206,132,176.06
  5. Step 5: Solve for x
    x = 16,206,132,176.06/136,817.52
  6. Step 6: Final answer
    x = 118,450.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.