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Finding the Fourth Proportional to 202,189.60, 303,503.10 and 127,394.20

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Solution

The fourth proportional to 202,189.60, 303,503.10 and 127,394.20 is: 191,229.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,189.60 : 303,503.10 = 127,394.20 : x
  2. Step 2: Convert to fraction form
    202,189.60/303,503.10 = 127,394.20/x
  3. Step 3: Cross multiply
    202,189.60x = 303,503.10 × 127,394.20
  4. Step 4: Simplify right side
    202,189.60x = 38,664,534,622.02
  5. Step 5: Solve for x
    x = 38,664,534,622.02/202,189.60
  6. Step 6: Final answer
    x = 191,229.10

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1.5x scale

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.