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Finding the Fourth Proportional to 445,717.66, 668,674.91 and 165,234.91

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Solution

The fourth proportional to 445,717.66, 668,674.91 and 165,234.91 is: 247,888.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,717.66 : 668,674.91 = 165,234.91 : x
  2. Step 2: Convert to fraction form
    445,717.66/668,674.91 = 165,234.91/x
  3. Step 3: Cross multiply
    445,717.66x = 668,674.91 × 165,234.91
  4. Step 4: Simplify right side
    445,717.66x = 110,488,438,573.11
  5. Step 5: Solve for x
    x = 110,488,438,573.11/445,717.66
  6. Step 6: Final answer
    x = 247,888.85

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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.