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Finding the Fourth Proportional to 663,616.75, 995,428.77 and 164,980.75

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Solution

The fourth proportional to 663,616.75, 995,428.77 and 164,980.75 is: 247,472.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,616.75 : 995,428.77 = 164,980.75 : x
  2. Step 2: Convert to fraction form
    663,616.75/995,428.77 = 164,980.75/x
  3. Step 3: Cross multiply
    663,616.75x = 995,428.77 × 164,980.75
  4. Step 4: Simplify right side
    663,616.75x = 164,226,585,046.18
  5. Step 5: Solve for x
    x = 164,226,585,046.18/663,616.75
  6. Step 6: Final answer
    x = 247,472.03

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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.