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Finding the Fourth Proportional to 76,986.14, 106,144.78 and 58,859.32

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Solution

The fourth proportional to 76,986.14, 106,144.78 and 58,859.32 is: 81,152.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,986.14 : 106,144.78 = 58,859.32 : x
  2. Step 2: Convert to fraction form
    76,986.14/106,144.78 = 58,859.32/x
  3. Step 3: Cross multiply
    76,986.14x = 106,144.78 × 58,859.32
  4. Step 4: Simplify right side
    76,986.14x = 6,247,609,572.35
  5. Step 5: Solve for x
    x = 6,247,609,572.35/76,986.14
  6. Step 6: Final answer
    x = 81,152.39

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