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Finding the Fourth Proportional to 202,354.20, 303,430.86 and 69,196.68

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Solution

The fourth proportional to 202,354.20, 303,430.86 and 69,196.68 is: 103,760.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,354.20 : 303,430.86 = 69,196.68 : x
  2. Step 2: Convert to fraction form
    202,354.20/303,430.86 = 69,196.68/x
  3. Step 3: Cross multiply
    202,354.20x = 303,430.86 × 69,196.68
  4. Step 4: Simplify right side
    202,354.20x = 20,996,408,121.54
  5. Step 5: Solve for x
    x = 20,996,408,121.54/202,354.20
  6. Step 6: Final answer
    x = 103,760.67

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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.