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Finding the Fourth Proportional to 112,505.80, 168,758.70 and 92,806.60

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Solution

The fourth proportional to 112,505.80, 168,758.70 and 92,806.60 is: 139,209.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,505.80 : 168,758.70 = 92,806.60 : x
  2. Step 2: Convert to fraction form
    112,505.80/168,758.70 = 92,806.60/x
  3. Step 3: Cross multiply
    112,505.80x = 168,758.70 × 92,806.60
  4. Step 4: Simplify right side
    112,505.80x = 15,661,921,167.42
  5. Step 5: Solve for x
    x = 15,661,921,167.42/112,505.80
  6. Step 6: Final answer
    x = 139,209.90

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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.