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Finding the Fourth Proportional to 636,984.20, 955,476.30 and 193,694.60

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Solution

The fourth proportional to 636,984.20, 955,476.30 and 193,694.60 is: 290,541.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,984.20 : 955,476.30 = 193,694.60 : x
  2. Step 2: Convert to fraction form
    636,984.20/955,476.30 = 193,694.60/x
  3. Step 3: Cross multiply
    636,984.20x = 955,476.30 × 193,694.60
  4. Step 4: Simplify right side
    636,984.20x = 185,070,599,737.98
  5. Step 5: Solve for x
    x = 185,070,599,737.98/636,984.20
  6. Step 6: Final answer
    x = 290,541.90

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Similar ratio
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1.5x scale

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.