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Finding the Fourth Proportional to 207,775, 311,714.34 and 60,031

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Solution

The fourth proportional to 207,775, 311,714.34 and 60,031 is: 90,061.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,775 : 311,714.34 = 60,031 : x
  2. Step 2: Convert to fraction form
    207,775/311,714.34 = 60,031/x
  3. Step 3: Cross multiply
    207,775x = 311,714.34 × 60,031
  4. Step 4: Simplify right side
    207,775x = 18,712,523,544.54
  5. Step 5: Solve for x
    x = 18,712,523,544.54/207,775
  6. Step 6: Final answer
    x = 90,061.48

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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.