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Finding the Fourth Proportional to 203,434.30, 305,151.45 and 193,066.30

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Solution

The fourth proportional to 203,434.30, 305,151.45 and 193,066.30 is: 289,599.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,434.30 : 305,151.45 = 193,066.30 : x
  2. Step 2: Convert to fraction form
    203,434.30/305,151.45 = 193,066.30/x
  3. Step 3: Cross multiply
    203,434.30x = 305,151.45 × 193,066.30
  4. Step 4: Simplify right side
    203,434.30x = 58,914,461,391.14
  5. Step 5: Solve for x
    x = 58,914,461,391.14/203,434.30
  6. Step 6: Final answer
    x = 289,599.45

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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.