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Finding the Fourth Proportional to 445,717.16, 668,674.15 and 165,234.41

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Solution

The fourth proportional to 445,717.16, 668,674.15 and 165,234.41 is: 247,888.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,717.16 : 668,674.15 = 165,234.41 : x
  2. Step 2: Convert to fraction form
    445,717.16/668,674.15 = 165,234.41/x
  3. Step 3: Cross multiply
    445,717.16x = 668,674.15 × 165,234.41
  4. Step 4: Simplify right side
    445,717.16x = 110,487,978,657.50
  5. Step 5: Solve for x
    x = 110,487,978,657.50/445,717.16
  6. Step 6: Final answer
    x = 247,888.10

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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.