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Finding the Fourth Proportional to 19,061.70, 26,305.14 and 11,609.70

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Solution

The fourth proportional to 19,061.70, 26,305.14 and 11,609.70 is: 16,021.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,061.70 : 26,305.14 = 11,609.70 : x
  2. Step 2: Convert to fraction form
    19,061.70/26,305.14 = 11,609.70/x
  3. Step 3: Cross multiply
    19,061.70x = 26,305.14 × 11,609.70
  4. Step 4: Simplify right side
    19,061.70x = 305,394,783.86
  5. Step 5: Solve for x
    x = 305,394,783.86/19,061.70
  6. Step 6: Final answer
    x = 16,021.38

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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.