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Finding the Fourth Proportional to 118,741.20, 177,863.40 and 55,615.20

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Solution

The fourth proportional to 118,741.20, 177,863.40 and 55,615.20 is: 83,306.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,741.20 : 177,863.40 = 55,615.20 : x
  2. Step 2: Convert to fraction form
    118,741.20/177,863.40 = 55,615.20/x
  3. Step 3: Cross multiply
    118,741.20x = 177,863.40 × 55,615.20
  4. Step 4: Simplify right side
    118,741.20x = 9,891,908,563.68
  5. Step 5: Solve for x
    x = 9,891,908,563.68/118,741.20
  6. Step 6: Final answer
    x = 83,306.46

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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.