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Finding the Fourth Proportional to 147,889.70, 221,745.88 and 67,827.40

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Solution

The fourth proportional to 147,889.70, 221,745.88 and 67,827.40 is: 101,700.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,889.70 : 221,745.88 = 67,827.40 : x
  2. Step 2: Convert to fraction form
    147,889.70/221,745.88 = 67,827.40/x
  3. Step 3: Cross multiply
    147,889.70x = 221,745.88 × 67,827.40
  4. Step 4: Simplify right side
    147,889.70x = 15,040,446,464.43
  5. Step 5: Solve for x
    x = 15,040,446,464.43/147,889.70
  6. Step 6: Final answer
    x = 101,700.43

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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.