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Finding the Fourth Proportional to 18,811.70, 26,394.70 and 18,811.70

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Solution

The fourth proportional to 18,811.70, 26,394.70 and 18,811.70 is: 26,394.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811.70 : 26,394.70 = 18,811.70 : x
  2. Step 2: Convert to fraction form
    18,811.70/26,394.70 = 18,811.70/x
  3. Step 3: Cross multiply
    18,811.70x = 26,394.70 × 18,811.70
  4. Step 4: Simplify right side
    18,811.70x = 496,529,177.99
  5. Step 5: Solve for x
    x = 496,529,177.99/18,811.70
  6. Step 6: Final answer
    x = 26,394.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.