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Finding the Fourth Proportional to 465,145.20, 697,717.80 and 132,721.20

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Solution

The fourth proportional to 465,145.20, 697,717.80 and 132,721.20 is: 199,081.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,145.20 : 697,717.80 = 132,721.20 : x
  2. Step 2: Convert to fraction form
    465,145.20/697,717.80 = 132,721.20/x
  3. Step 3: Cross multiply
    465,145.20x = 697,717.80 × 132,721.20
  4. Step 4: Simplify right side
    465,145.20x = 92,601,943,677.36
  5. Step 5: Solve for x
    x = 92,601,943,677.36/465,145.20
  6. Step 6: Final answer
    x = 199,081.80

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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.