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Finding the Fourth Proportional to 84,064.76, 125,725.34 and 74,770.04

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Solution

The fourth proportional to 84,064.76, 125,725.34 and 74,770.04 is: 111,824.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,064.76 : 125,725.34 = 74,770.04 : x
  2. Step 2: Convert to fraction form
    84,064.76/125,725.34 = 74,770.04/x
  3. Step 3: Cross multiply
    84,064.76x = 125,725.34 × 74,770.04
  4. Step 4: Simplify right side
    84,064.76x = 9,400,488,700.81
  5. Step 5: Solve for x
    x = 9,400,488,700.81/84,064.76
  6. Step 6: Final answer
    x = 111,824.37

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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.