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Finding the Fourth Proportional to 49,460.80, 74,191.20 and 47,711.20

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Solution

The fourth proportional to 49,460.80, 74,191.20 and 47,711.20 is: 71,566.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,460.80 : 74,191.20 = 47,711.20 : x
  2. Step 2: Convert to fraction form
    49,460.80/74,191.20 = 47,711.20/x
  3. Step 3: Cross multiply
    49,460.80x = 74,191.20 × 47,711.20
  4. Step 4: Simplify right side
    49,460.80x = 3,539,751,181.44
  5. Step 5: Solve for x
    x = 3,539,751,181.44/49,460.80
  6. Step 6: Final answer
    x = 71,566.80

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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.