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Finding the Fourth Proportional to 104,342.64, 143,991.72 and 59,019.90

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Solution

The fourth proportional to 104,342.64, 143,991.72 and 59,019.90 is: 81,446.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,342.64 : 143,991.72 = 59,019.90 : x
  2. Step 2: Convert to fraction form
    104,342.64/143,991.72 = 59,019.90/x
  3. Step 3: Cross multiply
    104,342.64x = 143,991.72 × 59,019.90
  4. Step 4: Simplify right side
    104,342.64x = 8,498,376,915.23
  5. Step 5: Solve for x
    x = 8,498,376,915.23/104,342.64
  6. Step 6: Final answer
    x = 81,446.83

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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.