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Finding the Fourth Proportional to 69,306.82, 103,458.86 and 60,899.29

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Solution

The fourth proportional to 69,306.82, 103,458.86 and 60,899.29 is: 90,908.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,306.82 : 103,458.86 = 60,899.29 : x
  2. Step 2: Convert to fraction form
    69,306.82/103,458.86 = 60,899.29/x
  3. Step 3: Cross multiply
    69,306.82x = 103,458.86 × 60,899.29
  4. Step 4: Simplify right side
    69,306.82x = 6,300,570,783.44
  5. Step 5: Solve for x
    x = 6,300,570,783.44/69,306.82
  6. Step 6: Final answer
    x = 90,908.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.