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Finding the Fourth Proportional to 67,805.73, 101,715.43 and 17,889.28

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Solution

The fourth proportional to 67,805.73, 101,715.43 and 17,889.28 is: 26,835.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,805.73 : 101,715.43 = 17,889.28 : x
  2. Step 2: Convert to fraction form
    67,805.73/101,715.43 = 17,889.28/x
  3. Step 3: Cross multiply
    67,805.73x = 101,715.43 × 17,889.28
  4. Step 4: Simplify right side
    67,805.73x = 1,819,615,807.59
  5. Step 5: Solve for x
    x = 1,819,615,807.59/67,805.73
  6. Step 6: Final answer
    x = 26,835.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.