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Finding the Fourth Proportional to 462,172.80, 693,259.20 and 162,991.20

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Solution

The fourth proportional to 462,172.80, 693,259.20 and 162,991.20 is: 244,486.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,172.80 : 693,259.20 = 162,991.20 : x
  2. Step 2: Convert to fraction form
    462,172.80/693,259.20 = 162,991.20/x
  3. Step 3: Cross multiply
    462,172.80x = 693,259.20 × 162,991.20
  4. Step 4: Simplify right side
    462,172.80x = 112,995,148,919.04
  5. Step 5: Solve for x
    x = 112,995,148,919.04/462,172.80
  6. Step 6: Final answer
    x = 244,486.80

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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.