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Finding the Fourth Proportional to 639,562.62, 959,176.80 and 190,162.47

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Solution

The fourth proportional to 639,562.62, 959,176.80 and 190,162.47 is: 285,194.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,562.62 : 959,176.80 = 190,162.47 : x
  2. Step 2: Convert to fraction form
    639,562.62/959,176.80 = 190,162.47/x
  3. Step 3: Cross multiply
    639,562.62x = 959,176.80 × 190,162.47
  4. Step 4: Simplify right side
    639,562.62x = 182,399,429,454.70
  5. Step 5: Solve for x
    x = 182,399,429,454.70/639,562.62
  6. Step 6: Final answer
    x = 285,194.01

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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.