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Finding the Fourth Proportional to 59,991.84, 89,961.84 and 18,429.12

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Solution

The fourth proportional to 59,991.84, 89,961.84 and 18,429.12 is: 27,635.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,991.84 : 89,961.84 = 18,429.12 : x
  2. Step 2: Convert to fraction form
    59,991.84/89,961.84 = 18,429.12/x
  3. Step 3: Cross multiply
    59,991.84x = 89,961.84 × 18,429.12
  4. Step 4: Simplify right side
    59,991.84x = 1,657,917,544.78
  5. Step 5: Solve for x
    x = 1,657,917,544.78/59,991.84
  6. Step 6: Final answer
    x = 27,635.72

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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.