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Finding the Fourth Proportional to 127,654.40, 191,481.60 and 121,530.80

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Solution

The fourth proportional to 127,654.40, 191,481.60 and 121,530.80 is: 182,296.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,654.40 : 191,481.60 = 121,530.80 : x
  2. Step 2: Convert to fraction form
    127,654.40/191,481.60 = 121,530.80/x
  3. Step 3: Cross multiply
    127,654.40x = 191,481.60 × 121,530.80
  4. Step 4: Simplify right side
    127,654.40x = 23,270,912,033.28
  5. Step 5: Solve for x
    x = 23,270,912,033.28/127,654.40
  6. Step 6: Final answer
    x = 182,296.20

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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.