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Finding the Fourth Proportional to 49,693.80, 74,540.70 and 40,362.60

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Solution

The fourth proportional to 49,693.80, 74,540.70 and 40,362.60 is: 60,543.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,693.80 : 74,540.70 = 40,362.60 : x
  2. Step 2: Convert to fraction form
    49,693.80/74,540.70 = 40,362.60/x
  3. Step 3: Cross multiply
    49,693.80x = 74,540.70 × 40,362.60
  4. Step 4: Simplify right side
    49,693.80x = 3,008,656,457.82
  5. Step 5: Solve for x
    x = 3,008,656,457.82/49,693.80
  6. Step 6: Final answer
    x = 60,543.90

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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.