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Finding the Fourth Proportional to 192,810.60, 289,215.90 and 112,766.40

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Solution

The fourth proportional to 192,810.60, 289,215.90 and 112,766.40 is: 169,149.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,810.60 : 289,215.90 = 112,766.40 : x
  2. Step 2: Convert to fraction form
    192,810.60/289,215.90 = 112,766.40/x
  3. Step 3: Cross multiply
    192,810.60x = 289,215.90 × 112,766.40
  4. Step 4: Simplify right side
    192,810.60x = 32,613,835,865.76
  5. Step 5: Solve for x
    x = 32,613,835,865.76/192,810.60
  6. Step 6: Final answer
    x = 169,149.60

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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.