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Finding the Fourth Proportional to 203,426.48, 305,098.01 and 77,023.12

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Solution

The fourth proportional to 203,426.48, 305,098.01 and 77,023.12 is: 115,518.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,426.48 : 305,098.01 = 77,023.12 : x
  2. Step 2: Convert to fraction form
    203,426.48/305,098.01 = 77,023.12/x
  3. Step 3: Cross multiply
    203,426.48x = 305,098.01 × 77,023.12
  4. Step 4: Simplify right side
    203,426.48x = 23,499,599,110.50
  5. Step 5: Solve for x
    x = 23,499,599,110.50/203,426.48
  6. Step 6: Final answer
    x = 115,518.88

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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.