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Finding the Fourth Proportional to 467,376, 644,978.88 and 266,190.72

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Solution

The fourth proportional to 467,376, 644,978.88 and 266,190.72 is: 367,343.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,376 : 644,978.88 = 266,190.72 : x
  2. Step 2: Convert to fraction form
    467,376/644,978.88 = 266,190.72/x
  3. Step 3: Cross multiply
    467,376x = 644,978.88 × 266,190.72
  4. Step 4: Simplify right side
    467,376x = 171,687,392,451.99
  5. Step 5: Solve for x
    x = 171,687,392,451.99/467,376
  6. Step 6: Final answer
    x = 367,343.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.