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Finding the Fourth Proportional to 104,967.68, 144,854.50 and 57,221.04

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Solution

The fourth proportional to 104,967.68, 144,854.50 and 57,221.04 is: 78,964.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,967.68 : 144,854.50 = 57,221.04 : x
  2. Step 2: Convert to fraction form
    104,967.68/144,854.50 = 57,221.04/x
  3. Step 3: Cross multiply
    104,967.68x = 144,854.50 × 57,221.04
  4. Step 4: Simplify right side
    104,967.68x = 8,288,725,138.68
  5. Step 5: Solve for x
    x = 8,288,725,138.68/104,967.68
  6. Step 6: Final answer
    x = 78,964.55

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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.