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Finding the Fourth Proportional to 639,376.70, 959,222.90 and 190,095.62

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Solution

The fourth proportional to 639,376.70, 959,222.90 and 190,095.62 is: 285,190.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,376.70 : 959,222.90 = 190,095.62 : x
  2. Step 2: Convert to fraction form
    639,376.70/959,222.90 = 190,095.62/x
  3. Step 3: Cross multiply
    639,376.70x = 959,222.90 × 190,095.62
  4. Step 4: Simplify right side
    639,376.70x = 182,344,071,893.70
  5. Step 5: Solve for x
    x = 182,344,071,893.70/639,376.70
  6. Step 6: Final answer
    x = 285,190.36

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Double scale
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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.