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Finding the Fourth Proportional to 29,687.84, 40,973.02 and 17,112.68

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Solution

The fourth proportional to 29,687.84, 40,973.02 and 17,112.68 is: 23,617.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,687.84 : 40,973.02 = 17,112.68 : x
  2. Step 2: Convert to fraction form
    29,687.84/40,973.02 = 17,112.68/x
  3. Step 3: Cross multiply
    29,687.84x = 40,973.02 × 17,112.68
  4. Step 4: Simplify right side
    29,687.84x = 701,158,179.89
  5. Step 5: Solve for x
    x = 701,158,179.89/29,687.84
  6. Step 6: Final answer
    x = 23,617.69

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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.