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Finding the Fourth Proportional to 30,121.53, 41,567.94 and 16,693

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Solution

The fourth proportional to 30,121.53, 41,567.94 and 16,693 is: 23,036.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,121.53 : 41,567.94 = 16,693 : x
  2. Step 2: Convert to fraction form
    30,121.53/41,567.94 = 16,693/x
  3. Step 3: Cross multiply
    30,121.53x = 41,567.94 × 16,693
  4. Step 4: Simplify right side
    30,121.53x = 693,893,622.42
  5. Step 5: Solve for x
    x = 693,893,622.42/30,121.53
  6. Step 6: Final answer
    x = 23,036.47

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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.