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Finding the Fourth Proportional to 21,893.24, 32,876.76 and 21,721.01

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Solution

The fourth proportional to 21,893.24, 32,876.76 and 21,721.01 is: 32,618.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,893.24 : 32,876.76 = 21,721.01 : x
  2. Step 2: Convert to fraction form
    21,893.24/32,876.76 = 21,721.01/x
  3. Step 3: Cross multiply
    21,893.24x = 32,876.76 × 21,721.01
  4. Step 4: Simplify right side
    21,893.24x = 714,116,473.64
  5. Step 5: Solve for x
    x = 714,116,473.64/21,893.24
  6. Step 6: Final answer
    x = 32,618.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.