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Finding the Fourth Proportional to 140,708.60, 211,062.90 and 131,492.60

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Solution

The fourth proportional to 140,708.60, 211,062.90 and 131,492.60 is: 197,238.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,708.60 : 211,062.90 = 131,492.60 : x
  2. Step 2: Convert to fraction form
    140,708.60/211,062.90 = 131,492.60/x
  3. Step 3: Cross multiply
    140,708.60x = 211,062.90 × 131,492.60
  4. Step 4: Simplify right side
    140,708.60x = 27,753,209,484.54
  5. Step 5: Solve for x
    x = 27,753,209,484.54/140,708.60
  6. Step 6: Final answer
    x = 197,238.90

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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.