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Finding the Fourth Proportional to 29,487.52, 40,696.50 and 16,912

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Solution

The fourth proportional to 29,487.52, 40,696.50 and 16,912 is: 23,340.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,487.52 : 40,696.50 = 16,912 : x
  2. Step 2: Convert to fraction form
    29,487.52/40,696.50 = 16,912/x
  3. Step 3: Cross multiply
    29,487.52x = 40,696.50 × 16,912
  4. Step 4: Simplify right side
    29,487.52x = 688,259,208
  5. Step 5: Solve for x
    x = 688,259,208/29,487.52
  6. Step 6: Final answer
    x = 23,340.69

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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.