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Finding the Fourth Proportional to 19,900.11, 27,466.07 and 11,407.93

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Solution

The fourth proportional to 19,900.11, 27,466.07 and 11,407.93 is: 15,745.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,900.11 : 27,466.07 = 11,407.93 : x
  2. Step 2: Convert to fraction form
    19,900.11/27,466.07 = 11,407.93/x
  3. Step 3: Cross multiply
    19,900.11x = 27,466.07 × 11,407.93
  4. Step 4: Simplify right side
    19,900.11x = 313,331,003.94
  5. Step 5: Solve for x
    x = 313,331,003.94/19,900.11
  6. Step 6: Final answer
    x = 15,745.19

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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.