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Finding the Fourth Proportional to 160,644.70, 221,690.99 and 89,025.90

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Solution

The fourth proportional to 160,644.70, 221,690.99 and 89,025.90 is: 122,856.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,644.70 : 221,690.99 = 89,025.90 : x
  2. Step 2: Convert to fraction form
    160,644.70/221,690.99 = 89,025.90/x
  3. Step 3: Cross multiply
    160,644.70x = 221,690.99 × 89,025.90
  4. Step 4: Simplify right side
    160,644.70x = 19,736,239,906.64
  5. Step 5: Solve for x
    x = 19,736,239,906.64/160,644.70
  6. Step 6: Final answer
    x = 122,856.46

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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.