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Finding the Fourth Proportional to 638,810.20, 957,600.90 and 496,576.60

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Solution

The fourth proportional to 638,810.20, 957,600.90 and 496,576.60 is: 744,387.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,810.20 : 957,600.90 = 496,576.60 : x
  2. Step 2: Convert to fraction form
    638,810.20/957,600.90 = 496,576.60/x
  3. Step 3: Cross multiply
    638,810.20x = 957,600.90 × 496,576.60
  4. Step 4: Simplify right side
    638,810.20x = 475,522,199,078.94
  5. Step 5: Solve for x
    x = 475,522,199,078.94/638,810.20
  6. Step 6: Final answer
    x = 744,387.30

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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.