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Finding the Fourth Proportional to 21,054.94, 29,055.81 and 11,624.11

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Solution

The fourth proportional to 21,054.94, 29,055.81 and 11,624.11 is: 16,041.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,054.94 : 29,055.81 = 11,624.11 : x
  2. Step 2: Convert to fraction form
    21,054.94/29,055.81 = 11,624.11/x
  3. Step 3: Cross multiply
    21,054.94x = 29,055.81 × 11,624.11
  4. Step 4: Simplify right side
    21,054.94x = 337,747,902.53
  5. Step 5: Solve for x
    x = 337,747,902.53/21,054.94
  6. Step 6: Final answer
    x = 16,041.27

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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.