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Finding the Fourth Proportional to 18,833.54, 25,978.59 and 11,666.86

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Solution

The fourth proportional to 18,833.54, 25,978.59 and 11,666.86 is: 16,093.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,833.54 : 25,978.59 = 11,666.86 : x
  2. Step 2: Convert to fraction form
    18,833.54/25,978.59 = 11,666.86/x
  3. Step 3: Cross multiply
    18,833.54x = 25,978.59 × 11,666.86
  4. Step 4: Simplify right side
    18,833.54x = 303,088,507.58
  5. Step 5: Solve for x
    x = 303,088,507.58/18,833.54
  6. Step 6: Final answer
    x = 16,093.02

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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.