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Finding the Fourth Proportional to 18,840.58, 25,998.97 and 10,456.58

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Solution

The fourth proportional to 18,840.58, 25,998.97 and 10,456.58 is: 14,429.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,840.58 : 25,998.97 = 10,456.58 : x
  2. Step 2: Convert to fraction form
    18,840.58/25,998.97 = 10,456.58/x
  3. Step 3: Cross multiply
    18,840.58x = 25,998.97 × 10,456.58
  4. Step 4: Simplify right side
    18,840.58x = 271,860,309.72
  5. Step 5: Solve for x
    x = 271,860,309.72/18,840.58
  6. Step 6: Final answer
    x = 14,429.51

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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.