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Finding the Fourth Proportional to 21,058.93, 29,061.22 and 11,627.43

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Solution

The fourth proportional to 21,058.93, 29,061.22 and 11,627.43 is: 16,045.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,058.93 : 29,061.22 = 11,627.43 : x
  2. Step 2: Convert to fraction form
    21,058.93/29,061.22 = 11,627.43/x
  3. Step 3: Cross multiply
    21,058.93x = 29,061.22 × 11,627.43
  4. Step 4: Simplify right side
    21,058.93x = 337,907,301.26
  5. Step 5: Solve for x
    x = 337,907,301.26/21,058.93
  6. Step 6: Final answer
    x = 16,045.80

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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.