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Finding the Fourth Proportional to 44,409.72, 66,660.72 and 29,721.28

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Solution

The fourth proportional to 44,409.72, 66,660.72 and 29,721.28 is: 44,612.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,409.72 : 66,660.72 = 29,721.28 : x
  2. Step 2: Convert to fraction form
    44,409.72/66,660.72 = 29,721.28/x
  3. Step 3: Cross multiply
    44,409.72x = 66,660.72 × 29,721.28
  4. Step 4: Simplify right side
    44,409.72x = 1,981,241,924.12
  5. Step 5: Solve for x
    x = 1,981,241,924.12/44,409.72
  6. Step 6: Final answer
    x = 44,612.80

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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.