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Finding the Fourth Proportional to 404,577.20, 606,946.80 and 120,267.20

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Solution

The fourth proportional to 404,577.20, 606,946.80 and 120,267.20 is: 180,424.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,577.20 : 606,946.80 = 120,267.20 : x
  2. Step 2: Convert to fraction form
    404,577.20/606,946.80 = 120,267.20/x
  3. Step 3: Cross multiply
    404,577.20x = 606,946.80 × 120,267.20
  4. Step 4: Simplify right side
    404,577.20x = 72,995,792,184.96
  5. Step 5: Solve for x
    x = 72,995,792,184.96/404,577.20
  6. Step 6: Final answer
    x = 180,424.88

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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.