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Finding the Fourth Proportional to 418,771.93, 578,007.90 and 237,589.91

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Solution

The fourth proportional to 418,771.93, 578,007.90 and 237,589.91 is: 327,932.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,771.93 : 578,007.90 = 237,589.91 : x
  2. Step 2: Convert to fraction form
    418,771.93/578,007.90 = 237,589.91/x
  3. Step 3: Cross multiply
    418,771.93x = 578,007.90 × 237,589.91
  4. Step 4: Simplify right side
    418,771.93x = 137,328,843,752.34
  5. Step 5: Solve for x
    x = 137,328,843,752.34/418,771.93
  6. Step 6: Final answer
    x = 327,932.31

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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.