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Finding the Fourth Proportional to 103,469.30, 155,203.95 and 92,315.60

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Solution

The fourth proportional to 103,469.30, 155,203.95 and 92,315.60 is: 138,473.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,469.30 : 155,203.95 = 92,315.60 : x
  2. Step 2: Convert to fraction form
    103,469.30/155,203.95 = 92,315.60/x
  3. Step 3: Cross multiply
    103,469.30x = 155,203.95 × 92,315.60
  4. Step 4: Simplify right side
    103,469.30x = 14,327,745,766.62
  5. Step 5: Solve for x
    x = 14,327,745,766.62/103,469.30
  6. Step 6: Final answer
    x = 138,473.40

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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.