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Finding the Fourth Proportional to 353,049.70, 487,218.06 and 191,915.56

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Solution

The fourth proportional to 353,049.70, 487,218.06 and 191,915.56 is: 264,848.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,049.70 : 487,218.06 = 191,915.56 : x
  2. Step 2: Convert to fraction form
    353,049.70/487,218.06 = 191,915.56/x
  3. Step 3: Cross multiply
    353,049.70x = 487,218.06 × 191,915.56
  4. Step 4: Simplify right side
    353,049.70x = 93,504,726,827.01
  5. Step 5: Solve for x
    x = 93,504,726,827.01/353,049.70
  6. Step 6: Final answer
    x = 264,848.62

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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.