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Finding the Fourth Proportional to 143,967.80, 215,859.21 and 59,786.06

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Solution

The fourth proportional to 143,967.80, 215,859.21 and 59,786.06 is: 89,640.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,967.80 : 215,859.21 = 59,786.06 : x
  2. Step 2: Convert to fraction form
    143,967.80/215,859.21 = 59,786.06/x
  3. Step 3: Cross multiply
    143,967.80x = 215,859.21 × 59,786.06
  4. Step 4: Simplify right side
    143,967.80x = 12,905,370,601.32
  5. Step 5: Solve for x
    x = 12,905,370,601.32/143,967.80
  6. Step 6: Final answer
    x = 89,640.68

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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.