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Finding the Fourth Proportional to 392,840.01, 589,553.48 and 266,179.91

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Solution

The fourth proportional to 392,840.01, 589,553.48 and 266,179.91 is: 399,468.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,840.01 : 589,553.48 = 266,179.91 : x
  2. Step 2: Convert to fraction form
    392,840.01/589,553.48 = 266,179.91/x
  3. Step 3: Cross multiply
    392,840.01x = 589,553.48 × 266,179.91
  4. Step 4: Simplify right side
    392,840.01x = 156,927,289,964.27
  5. Step 5: Solve for x
    x = 156,927,289,964.27/392,840.01
  6. Step 6: Final answer
    x = 399,468.70

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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.