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Finding the Fourth Proportional to 74,060.84, 111,128.52 and 29,719.28

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Solution

The fourth proportional to 74,060.84, 111,128.52 and 29,719.28 is: 44,593.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,060.84 : 111,128.52 = 29,719.28 : x
  2. Step 2: Convert to fraction form
    74,060.84/111,128.52 = 29,719.28/x
  3. Step 3: Cross multiply
    74,060.84x = 111,128.52 × 29,719.28
  4. Step 4: Simplify right side
    74,060.84x = 3,302,659,601.87
  5. Step 5: Solve for x
    x = 3,302,659,601.87/74,060.84
  6. Step 6: Final answer
    x = 44,593.87

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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.