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Finding the Fourth Proportional to 639,563.00, 959,257.01 and 190,353.20

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Solution

The fourth proportional to 639,563.00, 959,257.01 and 190,353.20 is: 285,503.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,563.00 : 959,257.01 = 190,353.20 : x
  2. Step 2: Convert to fraction form
    639,563.00/959,257.01 = 190,353.20/x
  3. Step 3: Cross multiply
    639,563.00x = 959,257.01 × 190,353.20
  4. Step 4: Simplify right side
    639,563.00x = 182,597,637,155.53
  5. Step 5: Solve for x
    x = 182,597,637,155.53/639,563.00
  6. Step 6: Final answer
    x = 285,503.76

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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.