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Finding the Fourth Proportional to 639,083.88, 958,626.14 and 218,363.88

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Solution

The fourth proportional to 639,083.88, 958,626.14 and 218,363.88 is: 327,545.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,083.88 : 958,626.14 = 218,363.88 : x
  2. Step 2: Convert to fraction form
    639,083.88/958,626.14 = 218,363.88/x
  3. Step 3: Cross multiply
    639,083.88x = 958,626.14 × 218,363.88
  4. Step 4: Simplify right side
    639,083.88x = 209,329,323,399.82
  5. Step 5: Solve for x
    x = 209,329,323,399.82/639,083.88
  6. Step 6: Final answer
    x = 327,545.93

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Similar ratio
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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.