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Finding the Fourth Proportional to 194,487.85, 291,565.36 and 74,630.80

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Solution

The fourth proportional to 194,487.85, 291,565.36 and 74,630.80 is: 111,882.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,487.85 : 291,565.36 = 74,630.80 : x
  2. Step 2: Convert to fraction form
    194,487.85/291,565.36 = 74,630.80/x
  3. Step 3: Cross multiply
    194,487.85x = 291,565.36 × 74,630.80
  4. Step 4: Simplify right side
    194,487.85x = 21,759,755,695.93
  5. Step 5: Solve for x
    x = 21,759,755,695.93/194,487.85
  6. Step 6: Final answer
    x = 111,882.34

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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.