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Finding the Fourth Proportional to 69,976.89, 96,491.84 and 47,276.51

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Solution

The fourth proportional to 69,976.89, 96,491.84 and 47,276.51 is: 65,190.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,976.89 : 96,491.84 = 47,276.51 : x
  2. Step 2: Convert to fraction form
    69,976.89/96,491.84 = 47,276.51/x
  3. Step 3: Cross multiply
    69,976.89x = 96,491.84 × 47,276.51
  4. Step 4: Simplify right side
    69,976.89x = 4,561,796,719.84
  5. Step 5: Solve for x
    x = 4,561,796,719.84/69,976.89
  6. Step 6: Final answer
    x = 65,190.05

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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.