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Finding the Fourth Proportional to 347,655.47, 479,724.89 and 194,672.39

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Solution

The fourth proportional to 347,655.47, 479,724.89 and 194,672.39 is: 268,625.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,655.47 : 479,724.89 = 194,672.39 : x
  2. Step 2: Convert to fraction form
    347,655.47/479,724.89 = 194,672.39/x
  3. Step 3: Cross multiply
    347,655.47x = 479,724.89 × 194,672.39
  4. Step 4: Simplify right side
    347,655.47x = 93,389,187,506.80
  5. Step 5: Solve for x
    x = 93,389,187,506.80/347,655.47
  6. Step 6: Final answer
    x = 268,625.69

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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.