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Finding the Fourth Proportional to 86,679.54, 119,675.16 and 58,035.96

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Solution

The fourth proportional to 86,679.54, 119,675.16 and 58,035.96 is: 80,128.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,679.54 : 119,675.16 = 58,035.96 : x
  2. Step 2: Convert to fraction form
    86,679.54/119,675.16 = 58,035.96/x
  3. Step 3: Cross multiply
    86,679.54x = 119,675.16 × 58,035.96
  4. Step 4: Simplify right side
    86,679.54x = 6,945,462,798.75
  5. Step 5: Solve for x
    x = 6,945,462,798.75/86,679.54
  6. Step 6: Final answer
    x = 80,128.05

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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.