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Finding the Fourth Proportional to 638,136.30, 957,204.45 and 622,389.90

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Solution

The fourth proportional to 638,136.30, 957,204.45 and 622,389.90 is: 933,584.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,136.30 : 957,204.45 = 622,389.90 : x
  2. Step 2: Convert to fraction form
    638,136.30/957,204.45 = 622,389.90/x
  3. Step 3: Cross multiply
    638,136.30x = 957,204.45 × 622,389.90
  4. Step 4: Simplify right side
    638,136.30x = 595,754,381,915.06
  5. Step 5: Solve for x
    x = 595,754,381,915.06/638,136.30
  6. Step 6: Final answer
    x = 933,584.85

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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.