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Finding the Fourth Proportional to 7,374.78, 10,177.11 and 4,860.54

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Solution

The fourth proportional to 7,374.78, 10,177.11 and 4,860.54 is: 6,707.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,374.78 : 10,177.11 = 4,860.54 : x
  2. Step 2: Convert to fraction form
    7,374.78/10,177.11 = 4,860.54/x
  3. Step 3: Cross multiply
    7,374.78x = 10,177.11 × 4,860.54
  4. Step 4: Simplify right side
    7,374.78x = 49,466,250.24
  5. Step 5: Solve for x
    x = 49,466,250.24/7,374.78
  6. Step 6: Final answer
    x = 6,707.49

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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.