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Finding the Fourth Proportional to 92,905.52, 139,225.44 and 74,242.32

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Solution

The fourth proportional to 92,905.52, 139,225.44 and 74,242.32 is: 111,257.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,905.52 : 139,225.44 = 74,242.32 : x
  2. Step 2: Convert to fraction form
    92,905.52/139,225.44 = 74,242.32/x
  3. Step 3: Cross multiply
    92,905.52x = 139,225.44 × 74,242.32
  4. Step 4: Simplify right side
    92,905.52x = 10,336,419,668.62
  5. Step 5: Solve for x
    x = 10,336,419,668.62/92,905.52
  6. Step 6: Final answer
    x = 111,257.33

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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.