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Finding the Fourth Proportional to 67,809.84, 101,703.15 and 17,890.46

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Solution

The fourth proportional to 67,809.84, 101,703.15 and 17,890.46 is: 26,832.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,809.84 : 101,703.15 = 17,890.46 : x
  2. Step 2: Convert to fraction form
    67,809.84/101,703.15 = 17,890.46/x
  3. Step 3: Cross multiply
    67,809.84x = 101,703.15 × 17,890.46
  4. Step 4: Simplify right side
    67,809.84x = 1,819,515,628.43
  5. Step 5: Solve for x
    x = 1,819,515,628.43/67,809.84
  6. Step 6: Final answer
    x = 26,832.62

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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.