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Finding the Fourth Proportional to 21,054.66, 29,054.66 and 11,623.02

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Solution

The fourth proportional to 21,054.66, 29,054.66 and 11,623.02 is: 16,039.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,054.66 : 29,054.66 = 11,623.02 : x
  2. Step 2: Convert to fraction form
    21,054.66/29,054.66 = 11,623.02/x
  3. Step 3: Cross multiply
    21,054.66x = 29,054.66 × 11,623.02
  4. Step 4: Simplify right side
    21,054.66x = 337,702,894.27
  5. Step 5: Solve for x
    x = 337,702,894.27/21,054.66
  6. Step 6: Final answer
    x = 16,039.34

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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.