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Finding the Fourth Proportional to 69,464.96, 103,899.74 and 64,422.72

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Solution

The fourth proportional to 69,464.96, 103,899.74 and 64,422.72 is: 96,357.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,464.96 : 103,899.74 = 64,422.72 : x
  2. Step 2: Convert to fraction form
    69,464.96/103,899.74 = 64,422.72/x
  3. Step 3: Cross multiply
    69,464.96x = 103,899.74 × 64,422.72
  4. Step 4: Simplify right side
    69,464.96x = 6,693,503,858.09
  5. Step 5: Solve for x
    x = 6,693,503,858.09/69,464.96
  6. Step 6: Final answer
    x = 96,357.99

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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.