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Finding the Fourth Proportional to 114,638.40, 172,020.36 and 44,520.48

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Solution

The fourth proportional to 114,638.40, 172,020.36 and 44,520.48 is: 66,805.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,638.40 : 172,020.36 = 44,520.48 : x
  2. Step 2: Convert to fraction form
    114,638.40/172,020.36 = 44,520.48/x
  3. Step 3: Cross multiply
    114,638.40x = 172,020.36 × 44,520.48
  4. Step 4: Simplify right side
    114,638.40x = 7,658,428,996.97
  5. Step 5: Solve for x
    x = 7,658,428,996.97/114,638.40
  6. Step 6: Final answer
    x = 66,805.09

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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.