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Finding the Fourth Proportional to 74,490.78, 111,712.44 and 24,561.56

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Solution

The fourth proportional to 74,490.78, 111,712.44 and 24,561.56 is: 36,834.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,490.78 : 111,712.44 = 24,561.56 : x
  2. Step 2: Convert to fraction form
    74,490.78/111,712.44 = 24,561.56/x
  3. Step 3: Cross multiply
    74,490.78x = 111,712.44 × 24,561.56
  4. Step 4: Simplify right side
    74,490.78x = 2,743,831,797.81
  5. Step 5: Solve for x
    x = 2,743,831,797.81/74,490.78
  6. Step 6: Final answer
    x = 36,834.52

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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.