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Finding the Fourth Proportional to 207,363.66, 311,045.20 and 65,221.42

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Solution

The fourth proportional to 207,363.66, 311,045.20 and 65,221.42 is: 97,832.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,363.66 : 311,045.20 = 65,221.42 : x
  2. Step 2: Convert to fraction form
    207,363.66/311,045.20 = 65,221.42/x
  3. Step 3: Cross multiply
    207,363.66x = 311,045.20 × 65,221.42
  4. Step 4: Simplify right side
    207,363.66x = 20,286,809,628.18
  5. Step 5: Solve for x
    x = 20,286,809,628.18/207,363.66
  6. Step 6: Final answer
    x = 97,832.04

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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.