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Finding the Fourth Proportional to 101,446.22, 139,992.44 and 56,124.29

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Solution

The fourth proportional to 101,446.22, 139,992.44 and 56,124.29 is: 77,449.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,446.22 : 139,992.44 = 56,124.29 : x
  2. Step 2: Convert to fraction form
    101,446.22/139,992.44 = 56,124.29/x
  3. Step 3: Cross multiply
    101,446.22x = 139,992.44 × 56,124.29
  4. Step 4: Simplify right side
    101,446.22x = 7,856,976,369.73
  5. Step 5: Solve for x
    x = 7,856,976,369.73/101,446.22
  6. Step 6: Final answer
    x = 77,449.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.