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Finding the Fourth Proportional to 101,216.64, 139,668.36 and 58,766.88

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Solution

The fourth proportional to 101,216.64, 139,668.36 and 58,766.88 is: 81,092.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,216.64 : 139,668.36 = 58,766.88 : x
  2. Step 2: Convert to fraction form
    101,216.64/139,668.36 = 58,766.88/x
  3. Step 3: Cross multiply
    101,216.64x = 139,668.36 × 58,766.88
  4. Step 4: Simplify right side
    101,216.64x = 8,207,873,751.92
  5. Step 5: Solve for x
    x = 8,207,873,751.92/101,216.64
  6. Step 6: Final answer
    x = 81,092.14

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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.