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Finding the Fourth Proportional to 143,843.26, 215,813.50 and 59,643.76

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Solution

The fourth proportional to 143,843.26, 215,813.50 and 59,643.76 is: 89,485.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,843.26 : 215,813.50 = 59,643.76 : x
  2. Step 2: Convert to fraction form
    143,843.26/215,813.50 = 59,643.76/x
  3. Step 3: Cross multiply
    143,843.26x = 215,813.50 × 59,643.76
  4. Step 4: Simplify right side
    143,843.26x = 12,871,928,598.76
  5. Step 5: Solve for x
    x = 12,871,928,598.76/143,843.26
  6. Step 6: Final answer
    x = 89,485.80

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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.