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Finding the Fourth Proportional to 44,443.40, 66,640.80 and 18,118.40

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Solution

The fourth proportional to 44,443.40, 66,640.80 and 18,118.40 is: 27,167.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,443.40 : 66,640.80 = 18,118.40 : x
  2. Step 2: Convert to fraction form
    44,443.40/66,640.80 = 18,118.40/x
  3. Step 3: Cross multiply
    44,443.40x = 66,640.80 × 18,118.40
  4. Step 4: Simplify right side
    44,443.40x = 1,207,424,670.72
  5. Step 5: Solve for x
    x = 1,207,424,670.72/44,443.40
  6. Step 6: Final answer
    x = 27,167.69

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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.