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Finding the Fourth Proportional to 18,914.25, 26,105.34 and 10,852.68

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Solution

The fourth proportional to 18,914.25, 26,105.34 and 10,852.68 is: 14,978.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,914.25 : 26,105.34 = 10,852.68 : x
  2. Step 2: Convert to fraction form
    18,914.25/26,105.34 = 10,852.68/x
  3. Step 3: Cross multiply
    18,914.25x = 26,105.34 × 10,852.68
  4. Step 4: Simplify right side
    18,914.25x = 283,312,901.31
  5. Step 5: Solve for x
    x = 283,312,901.31/18,914.25
  6. Step 6: Final answer
    x = 14,978.81

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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.