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Finding the Fourth Proportional to 639,328.79, 959,151.74 and 190,048.82

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Solution

The fourth proportional to 639,328.79, 959,151.74 and 190,048.82 is: 285,120.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,328.79 : 959,151.74 = 190,048.82 : x
  2. Step 2: Convert to fraction form
    639,328.79/959,151.74 = 190,048.82/x
  3. Step 3: Cross multiply
    639,328.79x = 959,151.74 × 190,048.82
  4. Step 4: Simplify right side
    639,328.79x = 182,285,659,260.95
  5. Step 5: Solve for x
    x = 182,285,659,260.95/639,328.79
  6. Step 6: Final answer
    x = 285,120.37

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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.