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Finding the Fourth Proportional to 639,010.88, 958,657.44 and 189,768.32

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Solution

The fourth proportional to 639,010.88, 958,657.44 and 189,768.32 is: 284,694.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,010.88 : 958,657.44 = 189,768.32 : x
  2. Step 2: Convert to fraction form
    639,010.88/958,657.44 = 189,768.32/x
  3. Step 3: Cross multiply
    639,010.88x = 958,657.44 × 189,768.32
  4. Step 4: Simplify right side
    639,010.88x = 181,922,811,844.30
  5. Step 5: Solve for x
    x = 181,922,811,844.30/639,010.88
  6. Step 6: Final answer
    x = 284,694.39

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Double scale
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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.