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Finding the Fourth Proportional to 114,414.60, 171,621.90 and 106,638.60

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Solution

The fourth proportional to 114,414.60, 171,621.90 and 106,638.60 is: 159,957.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,414.60 : 171,621.90 = 106,638.60 : x
  2. Step 2: Convert to fraction form
    114,414.60/171,621.90 = 106,638.60/x
  3. Step 3: Cross multiply
    114,414.60x = 171,621.90 × 106,638.60
  4. Step 4: Simplify right side
    114,414.60x = 18,301,519,145.34
  5. Step 5: Solve for x
    x = 18,301,519,145.34/114,414.60
  6. Step 6: Final answer
    x = 159,957.90

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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.