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Finding the Fourth Proportional to 194,462.80, 291,645.60 and 74,493.70

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Solution

The fourth proportional to 194,462.80, 291,645.60 and 74,493.70 is: 111,721.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,462.80 : 291,645.60 = 74,493.70 : x
  2. Step 2: Convert to fraction form
    194,462.80/291,645.60 = 74,493.70/x
  3. Step 3: Cross multiply
    194,462.80x = 291,645.60 × 74,493.70
  4. Step 4: Simplify right side
    194,462.80x = 21,725,759,832.72
  5. Step 5: Solve for x
    x = 21,725,759,832.72/194,462.80
  6. Step 6: Final answer
    x = 111,721.93

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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.