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Finding the Fourth Proportional to 189,414.96, 261,385.80 and 104,530.20

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Solution

The fourth proportional to 189,414.96, 261,385.80 and 104,530.20 is: 144,247.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,414.96 : 261,385.80 = 104,530.20 : x
  2. Step 2: Convert to fraction form
    189,414.96/261,385.80 = 104,530.20/x
  3. Step 3: Cross multiply
    189,414.96x = 261,385.80 × 104,530.20
  4. Step 4: Simplify right side
    189,414.96x = 27,322,709,951.16
  5. Step 5: Solve for x
    x = 27,322,709,951.16/189,414.96
  6. Step 6: Final answer
    x = 144,247.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.