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Finding the Fourth Proportional to 118,576.80, 177,807.60 and 65,930.40

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Solution

The fourth proportional to 118,576.80, 177,807.60 and 65,930.40 is: 98,863.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,576.80 : 177,807.60 = 65,930.40 : x
  2. Step 2: Convert to fraction form
    118,576.80/177,807.60 = 65,930.40/x
  3. Step 3: Cross multiply
    118,576.80x = 177,807.60 × 65,930.40
  4. Step 4: Simplify right side
    118,576.80x = 11,722,926,191.04
  5. Step 5: Solve for x
    x = 11,722,926,191.04/118,576.80
  6. Step 6: Final answer
    x = 98,863.57

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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.