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Finding the Fourth Proportional to 19,896.70, 27,461.34 and 11,404.51

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Solution

The fourth proportional to 19,896.70, 27,461.34 and 11,404.51 is: 15,740.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,896.70 : 27,461.34 = 11,404.51 : x
  2. Step 2: Convert to fraction form
    19,896.70/27,461.34 = 11,404.51/x
  3. Step 3: Cross multiply
    19,896.70x = 27,461.34 × 11,404.51
  4. Step 4: Simplify right side
    19,896.70x = 313,183,126.64
  5. Step 5: Solve for x
    x = 313,183,126.64/19,896.70
  6. Step 6: Final answer
    x = 15,740.46

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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.