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Finding the Fourth Proportional to 68,601.92, 103,075.08 and 43,652.80

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Solution

The fourth proportional to 68,601.92, 103,075.08 and 43,652.80 is: 65,588.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,601.92 : 103,075.08 = 43,652.80 : x
  2. Step 2: Convert to fraction form
    68,601.92/103,075.08 = 43,652.80/x
  3. Step 3: Cross multiply
    68,601.92x = 103,075.08 × 43,652.80
  4. Step 4: Simplify right side
    68,601.92x = 4,499,515,852.22
  5. Step 5: Solve for x
    x = 4,499,515,852.22/68,601.92
  6. Step 6: Final answer
    x = 65,588.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.