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Finding the Fourth Proportional to 168,056.64, 252,123.84 and 74,569.68

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Solution

The fourth proportional to 168,056.64, 252,123.84 and 74,569.68 is: 111,871.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,056.64 : 252,123.84 = 74,569.68 : x
  2. Step 2: Convert to fraction form
    168,056.64/252,123.84 = 74,569.68/x
  3. Step 3: Cross multiply
    168,056.64x = 252,123.84 × 74,569.68
  4. Step 4: Simplify right side
    168,056.64x = 18,800,794,069.17
  5. Step 5: Solve for x
    x = 18,800,794,069.17/168,056.64
  6. Step 6: Final answer
    x = 111,871.77

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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.