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Finding the Fourth Proportional to 4,948.81, 7,423.45 and 2,755.89

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Solution

The fourth proportional to 4,948.81, 7,423.45 and 2,755.89 is: 4,133.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,948.81 : 7,423.45 = 2,755.89 : x
  2. Step 2: Convert to fraction form
    4,948.81/7,423.45 = 2,755.89/x
  3. Step 3: Cross multiply
    4,948.81x = 7,423.45 × 2,755.89
  4. Step 4: Simplify right side
    4,948.81x = 20,458,204.73
  5. Step 5: Solve for x
    x = 20,458,204.73/4,948.81
  6. Step 6: Final answer
    x = 4,133.96

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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.