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Finding the Fourth Proportional to 77,324.63, 106,707.98 and 43,790.63

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Solution

The fourth proportional to 77,324.63, 106,707.98 and 43,790.63 is: 60,431.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,324.63 : 106,707.98 = 43,790.63 : x
  2. Step 2: Convert to fraction form
    77,324.63/106,707.98 = 43,790.63/x
  3. Step 3: Cross multiply
    77,324.63x = 106,707.98 × 43,790.63
  4. Step 4: Simplify right side
    77,324.63x = 4,672,809,246.16
  5. Step 5: Solve for x
    x = 4,672,809,246.16/77,324.63
  6. Step 6: Final answer
    x = 60,431.06

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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.