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Finding the Fourth Proportional to 30,233.72, 41,721.72 and 16,804.64

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Solution

The fourth proportional to 30,233.72, 41,721.72 and 16,804.64 is: 23,189.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,233.72 : 41,721.72 = 16,804.64 : x
  2. Step 2: Convert to fraction form
    30,233.72/41,721.72 = 16,804.64/x
  3. Step 3: Cross multiply
    30,233.72x = 41,721.72 × 16,804.64
  4. Step 4: Simplify right side
    30,233.72x = 701,118,484.78
  5. Step 5: Solve for x
    x = 701,118,484.78/30,233.72
  6. Step 6: Final answer
    x = 23,189.95

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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.