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Finding the Fourth Proportional to 112,605.40, 168,933.70 and 65,834.20

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Solution

The fourth proportional to 112,605.40, 168,933.70 and 65,834.20 is: 98,766.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,605.40 : 168,933.70 = 65,834.20 : x
  2. Step 2: Convert to fraction form
    112,605.40/168,933.70 = 65,834.20/x
  3. Step 3: Cross multiply
    112,605.40x = 168,933.70 × 65,834.20
  4. Step 4: Simplify right side
    112,605.40x = 11,121,614,992.54
  5. Step 5: Solve for x
    x = 11,121,614,992.54/112,605.40
  6. Step 6: Final answer
    x = 98,766.27

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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.