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Finding the Fourth Proportional to 447,270.12, 670,769.10 and 127,448.10

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Solution

The fourth proportional to 447,270.12, 670,769.10 and 127,448.10 is: 191,133.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,270.12 : 670,769.10 = 127,448.10 : x
  2. Step 2: Convert to fraction form
    447,270.12/670,769.10 = 127,448.10/x
  3. Step 3: Cross multiply
    447,270.12x = 670,769.10 × 127,448.10
  4. Step 4: Simplify right side
    447,270.12x = 85,488,247,333.71
  5. Step 5: Solve for x
    x = 85,488,247,333.71/447,270.12
  6. Step 6: Final answer
    x = 191,133.37

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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.