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Finding the Fourth Proportional to 663,508.80, 995,263.20 and 164,872.80

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Solution

The fourth proportional to 663,508.80, 995,263.20 and 164,872.80 is: 247,309.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,508.80 : 995,263.20 = 164,872.80 : x
  2. Step 2: Convert to fraction form
    663,508.80/995,263.20 = 164,872.80/x
  3. Step 3: Cross multiply
    663,508.80x = 995,263.20 × 164,872.80
  4. Step 4: Simplify right side
    663,508.80x = 164,091,830,520.96
  5. Step 5: Solve for x
    x = 164,091,830,520.96/663,508.80
  6. Step 6: Final answer
    x = 247,309.20

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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.