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Finding the Fourth Proportional to 18,863.97, 26,037.09 and 10,905.18

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Solution

The fourth proportional to 18,863.97, 26,037.09 and 10,905.18 is: 15,051.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,863.97 : 26,037.09 = 10,905.18 : x
  2. Step 2: Convert to fraction form
    18,863.97/26,037.09 = 10,905.18/x
  3. Step 3: Cross multiply
    18,863.97x = 26,037.09 × 10,905.18
  4. Step 4: Simplify right side
    18,863.97x = 283,939,153.13
  5. Step 5: Solve for x
    x = 283,939,153.13/18,863.97
  6. Step 6: Final answer
    x = 15,051.93

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Double scale
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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.