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Finding the Fourth Proportional to 662,660.12, 914,446.94 and 404,968.21

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Solution

The fourth proportional to 662,660.12, 914,446.94 and 404,968.21 is: 558,841.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,660.12 : 914,446.94 = 404,968.21 : x
  2. Step 2: Convert to fraction form
    662,660.12/914,446.94 = 404,968.21/x
  3. Step 3: Cross multiply
    662,660.12x = 914,446.94 × 404,968.21
  4. Step 4: Simplify right side
    662,660.12x = 370,321,936,120.82
  5. Step 5: Solve for x
    x = 370,321,936,120.82/662,660.12
  6. Step 6: Final answer
    x = 558,841.44

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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.