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Finding the Fourth Proportional to 26,189.50, 36,141.51 and 15,011.50

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Solution

The fourth proportional to 26,189.50, 36,141.51 and 15,011.50 is: 20,715.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,189.50 : 36,141.51 = 15,011.50 : x
  2. Step 2: Convert to fraction form
    26,189.50/36,141.51 = 15,011.50/x
  3. Step 3: Cross multiply
    26,189.50x = 36,141.51 × 15,011.50
  4. Step 4: Simplify right side
    26,189.50x = 542,538,277.37
  5. Step 5: Solve for x
    x = 542,538,277.37/26,189.50
  6. Step 6: Final answer
    x = 20,715.87

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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.