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Finding the Fourth Proportional to 638,137.80, 957,206.70 and 622,391.40

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Solution

The fourth proportional to 638,137.80, 957,206.70 and 622,391.40 is: 933,587.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,137.80 : 957,206.70 = 622,391.40 : x
  2. Step 2: Convert to fraction form
    638,137.80/957,206.70 = 622,391.40/x
  3. Step 3: Cross multiply
    638,137.80x = 957,206.70 × 622,391.40
  4. Step 4: Simplify right side
    638,137.80x = 595,757,218,102.38
  5. Step 5: Solve for x
    x = 595,757,218,102.38/638,137.80
  6. Step 6: Final answer
    x = 933,587.10

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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.