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Finding the Fourth Proportional to 416,608.20, 623,332.80 and 276,640.20

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Solution

The fourth proportional to 416,608.20, 623,332.80 and 276,640.20 is: 413,911.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,608.20 : 623,332.80 = 276,640.20 : x
  2. Step 2: Convert to fraction form
    416,608.20/623,332.80 = 276,640.20/x
  3. Step 3: Cross multiply
    416,608.20x = 623,332.80 × 276,640.20
  4. Step 4: Simplify right side
    416,608.20x = 172,438,910,458.56
  5. Step 5: Solve for x
    x = 172,438,910,458.56/416,608.20
  6. Step 6: Final answer
    x = 413,911.47

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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.