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Finding the Fourth Proportional to 202,362.13, 303,556.32 and 67,420.45

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Solution

The fourth proportional to 202,362.13, 303,556.32 and 67,420.45 is: 101,135.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,362.13 : 303,556.32 = 67,420.45 : x
  2. Step 2: Convert to fraction form
    202,362.13/303,556.32 = 67,420.45/x
  3. Step 3: Cross multiply
    202,362.13x = 303,556.32 × 67,420.45
  4. Step 4: Simplify right side
    202,362.13x = 20,465,903,694.74
  5. Step 5: Solve for x
    x = 20,465,903,694.74/202,362.13
  6. Step 6: Final answer
    x = 101,135.05

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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.