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Finding the Fourth Proportional to 626,571.91, 938,593.63 and 289,143.73

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Solution

The fourth proportional to 626,571.91, 938,593.63 and 289,143.73 is: 433,132.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,571.91 : 938,593.63 = 289,143.73 : x
  2. Step 2: Convert to fraction form
    626,571.91/938,593.63 = 289,143.73/x
  3. Step 3: Cross multiply
    626,571.91x = 938,593.63 × 289,143.73
  4. Step 4: Simplify right side
    626,571.91x = 271,388,463,132.44
  5. Step 5: Solve for x
    x = 271,388,463,132.44/626,571.91
  6. Step 6: Final answer
    x = 433,132.19

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Double scale
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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.