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Finding the Fourth Proportional to 196,512.70, 294,513.90 and 91,107.40

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Solution

The fourth proportional to 196,512.70, 294,513.90 and 91,107.40 is: 136,542.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,512.70 : 294,513.90 = 91,107.40 : x
  2. Step 2: Convert to fraction form
    196,512.70/294,513.90 = 91,107.40/x
  3. Step 3: Cross multiply
    196,512.70x = 294,513.90 × 91,107.40
  4. Step 4: Simplify right side
    196,512.70x = 26,832,395,692.86
  5. Step 5: Solve for x
    x = 26,832,395,692.86/196,512.70
  6. Step 6: Final answer
    x = 136,542.81

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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.