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Finding the Fourth Proportional to 203,147.34, 280,389.98 and 135,167.17

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Solution

The fourth proportional to 203,147.34, 280,389.98 and 135,167.17 is: 186,561.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,147.34 : 280,389.98 = 135,167.17 : x
  2. Step 2: Convert to fraction form
    203,147.34/280,389.98 = 135,167.17/x
  3. Step 3: Cross multiply
    203,147.34x = 280,389.98 × 135,167.17
  4. Step 4: Simplify right side
    203,147.34x = 37,899,520,092.96
  5. Step 5: Solve for x
    x = 37,899,520,092.96/203,147.34
  6. Step 6: Final answer
    x = 186,561.73

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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.