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Finding the Fourth Proportional to 77,076.91, 106,352.51 and 43,074.52

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Solution

The fourth proportional to 77,076.91, 106,352.51 and 43,074.52 is: 59,435.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,076.91 : 106,352.51 = 43,074.52 : x
  2. Step 2: Convert to fraction form
    77,076.91/106,352.51 = 43,074.52/x
  3. Step 3: Cross multiply
    77,076.91x = 106,352.51 × 43,074.52
  4. Step 4: Simplify right side
    77,076.91x = 4,581,083,319.05
  5. Step 5: Solve for x
    x = 4,581,083,319.05/77,076.91
  6. Step 6: Final answer
    x = 59,435.22

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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.