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Finding the Fourth Proportional to 76,143.94, 104,977.96 and 62,481.94

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Solution

The fourth proportional to 76,143.94, 104,977.96 and 62,481.94 is: 86,142.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,143.94 : 104,977.96 = 62,481.94 : x
  2. Step 2: Convert to fraction form
    76,143.94/104,977.96 = 62,481.94/x
  3. Step 3: Cross multiply
    76,143.94x = 104,977.96 × 62,481.94
  4. Step 4: Simplify right side
    76,143.94x = 6,559,226,598.04
  5. Step 5: Solve for x
    x = 6,559,226,598.04/76,143.94
  6. Step 6: Final answer
    x = 86,142.46

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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.