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Finding the Fourth Proportional to 621,912.20, 932,177.10 and 266,865.80

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Solution

The fourth proportional to 621,912.20, 932,177.10 and 266,865.80 is: 400,002.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,912.20 : 932,177.10 = 266,865.80 : x
  2. Step 2: Convert to fraction form
    621,912.20/932,177.10 = 266,865.80/x
  3. Step 3: Cross multiply
    621,912.20x = 932,177.10 × 266,865.80
  4. Step 4: Simplify right side
    621,912.20x = 248,766,187,533.18
  5. Step 5: Solve for x
    x = 248,766,187,533.18/621,912.20
  6. Step 6: Final answer
    x = 400,002.10

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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.