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Finding the Fourth Proportional to 207,996.85, 286,958.68 and 136,416.61

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Solution

The fourth proportional to 207,996.85, 286,958.68 and 136,416.61 is: 188,204.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,996.85 : 286,958.68 = 136,416.61 : x
  2. Step 2: Convert to fraction form
    207,996.85/286,958.68 = 136,416.61/x
  3. Step 3: Cross multiply
    207,996.85x = 286,958.68 × 136,416.61
  4. Step 4: Simplify right side
    207,996.85x = 39,145,930,335.67
  5. Step 5: Solve for x
    x = 39,145,930,335.67/207,996.85
  6. Step 6: Final answer
    x = 188,204.44

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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.