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Finding the Fourth Proportional to 18,203.94, 25,117.09 and 10,650.89

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Solution

The fourth proportional to 18,203.94, 25,117.09 and 10,650.89 is: 14,695.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203.94 : 25,117.09 = 10,650.89 : x
  2. Step 2: Convert to fraction form
    18,203.94/25,117.09 = 10,650.89/x
  3. Step 3: Cross multiply
    18,203.94x = 25,117.09 × 10,650.89
  4. Step 4: Simplify right side
    18,203.94x = 267,519,398.88
  5. Step 5: Solve for x
    x = 267,519,398.88/18,203.94
  6. Step 6: Final answer
    x = 14,695.69

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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.