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Finding the Fourth Proportional to 21,399.93, 32,092.04 and 7,355.99

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Solution

The fourth proportional to 21,399.93, 32,092.04 and 7,355.99 is: 11,031.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,399.93 : 32,092.04 = 7,355.99 : x
  2. Step 2: Convert to fraction form
    21,399.93/32,092.04 = 7,355.99/x
  3. Step 3: Cross multiply
    21,399.93x = 32,092.04 × 7,355.99
  4. Step 4: Simplify right side
    21,399.93x = 236,068,528.08
  5. Step 5: Solve for x
    x = 236,068,528.08/21,399.93
  6. Step 6: Final answer
    x = 11,031.28

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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.