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Finding the Fourth Proportional to 68,814.80, 103,222.20 and 37,710.80

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Solution

The fourth proportional to 68,814.80, 103,222.20 and 37,710.80 is: 56,566.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,814.80 : 103,222.20 = 37,710.80 : x
  2. Step 2: Convert to fraction form
    68,814.80/103,222.20 = 37,710.80/x
  3. Step 3: Cross multiply
    68,814.80x = 103,222.20 × 37,710.80
  4. Step 4: Simplify right side
    68,814.80x = 3,892,591,739.76
  5. Step 5: Solve for x
    x = 3,892,591,739.76/68,814.80
  6. Step 6: Final answer
    x = 56,566.20

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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.