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Finding the Fourth Proportional to 353,016.12, 487,165.14 and 191,871.22

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Solution

The fourth proportional to 353,016.12, 487,165.14 and 191,871.22 is: 264,783.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,016.12 : 487,165.14 = 191,871.22 : x
  2. Step 2: Convert to fraction form
    353,016.12/487,165.14 = 191,871.22/x
  3. Step 3: Cross multiply
    353,016.12x = 487,165.14 × 191,871.22
  4. Step 4: Simplify right side
    353,016.12x = 93,472,969,753.27
  5. Step 5: Solve for x
    x = 93,472,969,753.27/353,016.12
  6. Step 6: Final answer
    x = 264,783.86

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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.