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Finding the Fourth Proportional to 118,751.85, 163,877.61 and 65,040.24

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Solution

The fourth proportional to 118,751.85, 163,877.61 and 65,040.24 is: 89,755.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,751.85 : 163,877.61 = 65,040.24 : x
  2. Step 2: Convert to fraction form
    118,751.85/163,877.61 = 65,040.24/x
  3. Step 3: Cross multiply
    118,751.85x = 163,877.61 × 65,040.24
  4. Step 4: Simplify right side
    118,751.85x = 10,658,639,085.03
  5. Step 5: Solve for x
    x = 10,658,639,085.03/118,751.85
  6. Step 6: Final answer
    x = 89,755.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.