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Finding the Fourth Proportional to 202,135.20, 303,452.40 and 127,255.20

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Solution

The fourth proportional to 202,135.20, 303,452.40 and 127,255.20 is: 191,039.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,135.20 : 303,452.40 = 127,255.20 : x
  2. Step 2: Convert to fraction form
    202,135.20/303,452.40 = 127,255.20/x
  3. Step 3: Cross multiply
    202,135.20x = 303,452.40 × 127,255.20
  4. Step 4: Simplify right side
    202,135.20x = 38,615,895,852.48
  5. Step 5: Solve for x
    x = 38,615,895,852.48/202,135.20
  6. Step 6: Final answer
    x = 191,039.94

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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.