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Finding the Fourth Proportional to 21,054.74, 29,055.47 and 11,623.23

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Solution

The fourth proportional to 21,054.74, 29,055.47 and 11,623.23 is: 16,040.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,054.74 : 29,055.47 = 11,623.23 : x
  2. Step 2: Convert to fraction form
    21,054.74/29,055.47 = 11,623.23/x
  3. Step 3: Cross multiply
    21,054.74x = 29,055.47 × 11,623.23
  4. Step 4: Simplify right side
    21,054.74x = 337,718,352.45
  5. Step 5: Solve for x
    x = 337,718,352.45/21,054.74
  6. Step 6: Final answer
    x = 16,040.02

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.