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Finding the Fourth Proportional to 27,322.88, 40,920.53 and 21,032.99

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Solution

The fourth proportional to 27,322.88, 40,920.53 and 21,032.99 is: 31,500.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,322.88 : 40,920.53 = 21,032.99 : x
  2. Step 2: Convert to fraction form
    27,322.88/40,920.53 = 21,032.99/x
  3. Step 3: Cross multiply
    27,322.88x = 40,920.53 × 21,032.99
  4. Step 4: Simplify right side
    27,322.88x = 860,680,946.26
  5. Step 5: Solve for x
    x = 860,680,946.26/27,322.88
  6. Step 6: Final answer
    x = 31,500.37

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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.