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Finding the Fourth Proportional to 101,226.94, 139,693.19 and 58,788.20

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Solution

The fourth proportional to 101,226.94, 139,693.19 and 58,788.20 is: 81,127.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,226.94 : 139,693.19 = 58,788.20 : x
  2. Step 2: Convert to fraction form
    101,226.94/139,693.19 = 58,788.20/x
  3. Step 3: Cross multiply
    101,226.94x = 139,693.19 × 58,788.20
  4. Step 4: Simplify right side
    101,226.94x = 8,212,311,247.65
  5. Step 5: Solve for x
    x = 8,212,311,247.65/101,226.94
  6. Step 6: Final answer
    x = 81,127.73

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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.