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Finding the Fourth Proportional to 69,079.40, 103,619.10 and 61,562.60

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Solution

The fourth proportional to 69,079.40, 103,619.10 and 61,562.60 is: 92,343.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,079.40 : 103,619.10 = 61,562.60 : x
  2. Step 2: Convert to fraction form
    69,079.40/103,619.10 = 61,562.60/x
  3. Step 3: Cross multiply
    69,079.40x = 103,619.10 × 61,562.60
  4. Step 4: Simplify right side
    69,079.40x = 6,379,061,205.66
  5. Step 5: Solve for x
    x = 6,379,061,205.66/69,079.40
  6. Step 6: Final answer
    x = 92,343.90

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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.