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Finding the Fourth Proportional to 69,076.84, 103,615.26 and 45,697.81

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Solution

The fourth proportional to 69,076.84, 103,615.26 and 45,697.81 is: 68,546.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,076.84 : 103,615.26 = 45,697.81 : x
  2. Step 2: Convert to fraction form
    69,076.84/103,615.26 = 45,697.81/x
  3. Step 3: Cross multiply
    69,076.84x = 103,615.26 × 45,697.81
  4. Step 4: Simplify right side
    69,076.84x = 4,734,990,464.58
  5. Step 5: Solve for x
    x = 4,734,990,464.58/69,076.84
  6. Step 6: Final answer
    x = 68,546.72

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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.