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Finding the Fourth Proportional to 29,100, 40,156.11 and 17,160.60

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Solution

The fourth proportional to 29,100, 40,156.11 and 17,160.60 is: 23,680.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,100 : 40,156.11 = 17,160.60 : x
  2. Step 2: Convert to fraction form
    29,100/40,156.11 = 17,160.60/x
  3. Step 3: Cross multiply
    29,100x = 40,156.11 × 17,160.60
  4. Step 4: Simplify right side
    29,100x = 689,102,941.27
  5. Step 5: Solve for x
    x = 689,102,941.27/29,100
  6. Step 6: Final answer
    x = 23,680.51

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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.