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Finding the Fourth Proportional to 636,684.17, 878,619.56 and 350,198.10

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Solution

The fourth proportional to 636,684.17, 878,619.56 and 350,198.10 is: 483,270.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,684.17 : 878,619.56 = 350,198.10 : x
  2. Step 2: Convert to fraction form
    636,684.17/878,619.56 = 350,198.10/x
  3. Step 3: Cross multiply
    636,684.17x = 878,619.56 × 350,198.10
  4. Step 4: Simplify right side
    636,684.17x = 307,690,898,783.85
  5. Step 5: Solve for x
    x = 307,690,898,783.85/636,684.17
  6. Step 6: Final answer
    x = 483,270.85

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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.