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Finding the Fourth Proportional to 442,936.40, 664,296.60 and 127,360.40

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Solution

The fourth proportional to 442,936.40, 664,296.60 and 127,360.40 is: 191,009.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,936.40 : 664,296.60 = 127,360.40 : x
  2. Step 2: Convert to fraction form
    442,936.40/664,296.60 = 127,360.40/x
  3. Step 3: Cross multiply
    442,936.40x = 664,296.60 × 127,360.40
  4. Step 4: Simplify right side
    442,936.40x = 84,605,080,694.64
  5. Step 5: Solve for x
    x = 84,605,080,694.64/442,936.40
  6. Step 6: Final answer
    x = 191,009.55

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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.