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Finding the Fourth Proportional to 662,906.12, 914,805.78 and 361,100.12

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Solution

The fourth proportional to 662,906.12, 914,805.78 and 361,100.12 is: 498,315.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,906.12 : 914,805.78 = 361,100.12 : x
  2. Step 2: Convert to fraction form
    662,906.12/914,805.78 = 361,100.12/x
  3. Step 3: Cross multiply
    662,906.12x = 914,805.78 × 361,100.12
  4. Step 4: Simplify right side
    662,906.12x = 330,336,476,934.69
  5. Step 5: Solve for x
    x = 330,336,476,934.69/662,906.12
  6. Step 6: Final answer
    x = 498,315.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.