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Finding the Fourth Proportional to 638,456.60, 957,608.10 and 264,440.60

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Solution

The fourth proportional to 638,456.60, 957,608.10 and 264,440.60 is: 396,629.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,456.60 : 957,608.10 = 264,440.60 : x
  2. Step 2: Convert to fraction form
    638,456.60/957,608.10 = 264,440.60/x
  3. Step 3: Cross multiply
    638,456.60x = 957,608.10 × 264,440.60
  4. Step 4: Simplify right side
    638,456.60x = 253,230,460,528.86
  5. Step 5: Solve for x
    x = 253,230,460,528.86/638,456.60
  6. Step 6: Final answer
    x = 396,629.09

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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.