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Finding the Fourth Proportional to 639,565.50, 959,260.75 and 190,355.70

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Solution

The fourth proportional to 639,565.50, 959,260.75 and 190,355.70 is: 285,507.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,565.50 : 959,260.75 = 190,355.70 : x
  2. Step 2: Convert to fraction form
    639,565.50/959,260.75 = 190,355.70/x
  3. Step 3: Cross multiply
    639,565.50x = 959,260.75 × 190,355.70
  4. Step 4: Simplify right side
    639,565.50x = 182,600,751,548.78
  5. Step 5: Solve for x
    x = 182,600,751,548.78/639,565.50
  6. Step 6: Final answer
    x = 285,507.51

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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.