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Finding the Fourth Proportional to 86,727.80, 119,640.53 and 58,048.67

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Solution

The fourth proportional to 86,727.80, 119,640.53 and 58,048.67 is: 80,077.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,727.80 : 119,640.53 = 58,048.67 : x
  2. Step 2: Convert to fraction form
    86,727.80/119,640.53 = 58,048.67/x
  3. Step 3: Cross multiply
    86,727.80x = 119,640.53 × 58,048.67
  4. Step 4: Simplify right side
    86,727.80x = 6,944,972,756.15
  5. Step 5: Solve for x
    x = 6,944,972,756.15/86,727.80
  6. Step 6: Final answer
    x = 80,077.82

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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.