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Finding the Fourth Proportional to 49,955.80, 74,933.70 and 47,234.20

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Solution

The fourth proportional to 49,955.80, 74,933.70 and 47,234.20 is: 70,851.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,955.80 : 74,933.70 = 47,234.20 : x
  2. Step 2: Convert to fraction form
    49,955.80/74,933.70 = 47,234.20/x
  3. Step 3: Cross multiply
    49,955.80x = 74,933.70 × 47,234.20
  4. Step 4: Simplify right side
    49,955.80x = 3,539,433,372.54
  5. Step 5: Solve for x
    x = 3,539,433,372.54/49,955.80
  6. Step 6: Final answer
    x = 70,851.30

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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.