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Finding the Fourth Proportional to 608,576.44, 839,552.70 and 393,785.78

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Solution

The fourth proportional to 608,576.44, 839,552.70 and 393,785.78 is: 543,241.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,576.44 : 839,552.70 = 393,785.78 : x
  2. Step 2: Convert to fraction form
    608,576.44/839,552.70 = 393,785.78/x
  3. Step 3: Cross multiply
    608,576.44x = 839,552.70 × 393,785.78
  4. Step 4: Simplify right side
    608,576.44x = 330,603,914,820.61
  5. Step 5: Solve for x
    x = 330,603,914,820.61/608,576.44
  6. Step 6: Final answer
    x = 543,241.40

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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.