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Finding the Fourth Proportional to 18,843.76, 26,005.08 and 10,886.86

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Solution

The fourth proportional to 18,843.76, 26,005.08 and 10,886.86 is: 15,024.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,843.76 : 26,005.08 = 10,886.86 : x
  2. Step 2: Convert to fraction form
    18,843.76/26,005.08 = 10,886.86/x
  3. Step 3: Cross multiply
    18,843.76x = 26,005.08 × 10,886.86
  4. Step 4: Simplify right side
    18,843.76x = 283,113,665.25
  5. Step 5: Solve for x
    x = 283,113,665.25/18,843.76
  6. Step 6: Final answer
    x = 15,024.27

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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.