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Finding the Fourth Proportional to 19,551.78, 29,313.09 and 11,758.77

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Solution

The fourth proportional to 19,551.78, 29,313.09 and 11,758.77 is: 17,629.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,551.78 : 29,313.09 = 11,758.77 : x
  2. Step 2: Convert to fraction form
    19,551.78/29,313.09 = 11,758.77/x
  3. Step 3: Cross multiply
    19,551.78x = 29,313.09 × 11,758.77
  4. Step 4: Simplify right side
    19,551.78x = 344,685,883.30
  5. Step 5: Solve for x
    x = 344,685,883.30/19,551.78
  6. Step 6: Final answer
    x = 17,629.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.