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Finding the Fourth Proportional to 69,991.90, 96,558.28 and 47,322.83

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Solution

The fourth proportional to 69,991.90, 96,558.28 and 47,322.83 is: 65,284.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,991.90 : 96,558.28 = 47,322.83 : x
  2. Step 2: Convert to fraction form
    69,991.90/96,558.28 = 47,322.83/x
  3. Step 3: Cross multiply
    69,991.90x = 96,558.28 × 47,322.83
  4. Step 4: Simplify right side
    69,991.90x = 4,569,411,192.62
  5. Step 5: Solve for x
    x = 4,569,411,192.62/69,991.90
  6. Step 6: Final answer
    x = 65,284.86

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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.