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Finding the Fourth Proportional to 74,169.64, 111,281.82 and 34,739.56

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Solution

The fourth proportional to 74,169.64, 111,281.82 and 34,739.56 is: 52,122.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,169.64 : 111,281.82 = 34,739.56 : x
  2. Step 2: Convert to fraction form
    74,169.64/111,281.82 = 34,739.56/x
  3. Step 3: Cross multiply
    74,169.64x = 111,281.82 × 34,739.56
  4. Step 4: Simplify right side
    74,169.64x = 3,865,881,462.80
  5. Step 5: Solve for x
    x = 3,865,881,462.80/74,169.64
  6. Step 6: Final answer
    x = 52,122.15

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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.