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Finding the Fourth Proportional to 626,812.60, 940,218.90 and 361,391.80

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Solution

The fourth proportional to 626,812.60, 940,218.90 and 361,391.80 is: 542,087.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,812.60 : 940,218.90 = 361,391.80 : x
  2. Step 2: Convert to fraction form
    626,812.60/940,218.90 = 361,391.80/x
  3. Step 3: Cross multiply
    626,812.60x = 940,218.90 × 361,391.80
  4. Step 4: Simplify right side
    626,812.60x = 339,787,400,665.02
  5. Step 5: Solve for x
    x = 339,787,400,665.02/626,812.60
  6. Step 6: Final answer
    x = 542,087.70

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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.