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Finding the Fourth Proportional to 231,043.80, 346,719.30 and 131,203.80

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Solution

The fourth proportional to 231,043.80, 346,719.30 and 131,203.80 is: 196,892.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,043.80 : 346,719.30 = 131,203.80 : x
  2. Step 2: Convert to fraction form
    231,043.80/346,719.30 = 131,203.80/x
  3. Step 3: Cross multiply
    231,043.80x = 346,719.30 × 131,203.80
  4. Step 4: Simplify right side
    231,043.80x = 45,490,889,693.34
  5. Step 5: Solve for x
    x = 45,490,889,693.34/231,043.80
  6. Step 6: Final answer
    x = 196,892.93

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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.