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Finding the Fourth Proportional to 168,657.48, 252,986.21 and 68,864.67

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Solution

The fourth proportional to 168,657.48, 252,986.21 and 68,864.67 is: 103,297.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,657.48 : 252,986.21 = 68,864.67 : x
  2. Step 2: Convert to fraction form
    168,657.48/252,986.21 = 68,864.67/x
  3. Step 3: Cross multiply
    168,657.48x = 252,986.21 × 68,864.67
  4. Step 4: Simplify right side
    168,657.48x = 17,421,811,521.88
  5. Step 5: Solve for x
    x = 17,421,811,521.88/168,657.48
  6. Step 6: Final answer
    x = 103,297.00

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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.