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Finding the Fourth Proportional to 147,280.80, 220,694.40 and 109,664.40

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Solution

The fourth proportional to 147,280.80, 220,694.40 and 109,664.40 is: 164,327.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,280.80 : 220,694.40 = 109,664.40 : x
  2. Step 2: Convert to fraction form
    147,280.80/220,694.40 = 109,664.40/x
  3. Step 3: Cross multiply
    147,280.80x = 220,694.40 × 109,664.40
  4. Step 4: Simplify right side
    147,280.80x = 24,202,318,959.36
  5. Step 5: Solve for x
    x = 24,202,318,959.36/147,280.80
  6. Step 6: Final answer
    x = 164,327.73

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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.