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Finding the Fourth Proportional to 21,048.44, 29,047.01 and 11,488.41

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Solution

The fourth proportional to 21,048.44, 29,047.01 and 11,488.41 is: 15,854.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,048.44 : 29,047.01 = 11,488.41 : x
  2. Step 2: Convert to fraction form
    21,048.44/29,047.01 = 11,488.41/x
  3. Step 3: Cross multiply
    21,048.44x = 29,047.01 × 11,488.41
  4. Step 4: Simplify right side
    21,048.44x = 333,703,902.71
  5. Step 5: Solve for x
    x = 333,703,902.71/21,048.44
  6. Step 6: Final answer
    x = 15,854.10

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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.