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Finding the Fourth Proportional to 92,859.30, 139,270.44 and 45,454.02

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Solution

The fourth proportional to 92,859.30, 139,270.44 and 45,454.02 is: 68,171.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,859.30 : 139,270.44 = 45,454.02 : x
  2. Step 2: Convert to fraction form
    92,859.30/139,270.44 = 45,454.02/x
  3. Step 3: Cross multiply
    92,859.30x = 139,270.44 × 45,454.02
  4. Step 4: Simplify right side
    92,859.30x = 6,330,401,365.17
  5. Step 5: Solve for x
    x = 6,330,401,365.17/92,859.30
  6. Step 6: Final answer
    x = 68,171.97

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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.