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Finding the Fourth Proportional to 267,114.80, 400,894.68 and 140,800.40

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Solution

The fourth proportional to 267,114.80, 400,894.68 and 140,800.40 is: 211,317.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,114.80 : 400,894.68 = 140,800.40 : x
  2. Step 2: Convert to fraction form
    267,114.80/400,894.68 = 140,800.40/x
  3. Step 3: Cross multiply
    267,114.80x = 400,894.68 × 140,800.40
  4. Step 4: Simplify right side
    267,114.80x = 56,446,131,301.87
  5. Step 5: Solve for x
    x = 56,446,131,301.87/267,114.80
  6. Step 6: Final answer
    x = 211,317.87

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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.