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Finding the Fourth Proportional to 353,105.67, 487,265.14 and 191,959.31

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Solution

The fourth proportional to 353,105.67, 487,265.14 and 191,959.31 is: 264,892.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,105.67 : 487,265.14 = 191,959.31 : x
  2. Step 2: Convert to fraction form
    353,105.67/487,265.14 = 191,959.31/x
  3. Step 3: Cross multiply
    353,105.67x = 487,265.14 × 191,959.31
  4. Step 4: Simplify right side
    353,105.67x = 93,535,080,439.79
  5. Step 5: Solve for x
    x = 93,535,080,439.79/353,105.67
  6. Step 6: Final answer
    x = 264,892.60

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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.