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Finding the Fourth Proportional to 626,571.95, 938,593.85 and 289,143.86

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Solution

The fourth proportional to 626,571.95, 938,593.85 and 289,143.86 is: 433,132.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,571.95 : 938,593.85 = 289,143.86 : x
  2. Step 2: Convert to fraction form
    626,571.95/938,593.85 = 289,143.86/x
  3. Step 3: Cross multiply
    626,571.95x = 938,593.85 × 289,143.86
  4. Step 4: Simplify right side
    626,571.95x = 271,388,642,622.57
  5. Step 5: Solve for x
    x = 271,388,642,622.57/626,571.95
  6. Step 6: Final answer
    x = 433,132.45

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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.