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Finding the Fourth Proportional to 118,548.80, 177,765.60 and 65,902.40

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Solution

The fourth proportional to 118,548.80, 177,765.60 and 65,902.40 is: 98,821.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,548.80 : 177,765.60 = 65,902.40 : x
  2. Step 2: Convert to fraction form
    118,548.80/177,765.60 = 65,902.40/x
  3. Step 3: Cross multiply
    118,548.80x = 177,765.60 × 65,902.40
  4. Step 4: Simplify right side
    118,548.80x = 11,715,179,677.44
  5. Step 5: Solve for x
    x = 11,715,179,677.44/118,548.80
  6. Step 6: Final answer
    x = 98,821.58

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1.5x scale

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.