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Finding the Fourth Proportional to 92,914.91, 139,420.03 and 45,529.11

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Solution

The fourth proportional to 92,914.91, 139,420.03 and 45,529.11 is: 68,317.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,914.91 : 139,420.03 = 45,529.11 : x
  2. Step 2: Convert to fraction form
    92,914.91/139,420.03 = 45,529.11/x
  3. Step 3: Cross multiply
    92,914.91x = 139,420.03 × 45,529.11
  4. Step 4: Simplify right side
    92,914.91x = 6,347,669,995.90
  5. Step 5: Solve for x
    x = 6,347,669,995.90/92,914.91
  6. Step 6: Final answer
    x = 68,317.02

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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.