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Finding the Fourth Proportional to 69,243.34, 103,820.62 and 29,251.50

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Solution

The fourth proportional to 69,243.34, 103,820.62 and 29,251.50 is: 43,858.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,243.34 : 103,820.62 = 29,251.50 : x
  2. Step 2: Convert to fraction form
    69,243.34/103,820.62 = 29,251.50/x
  3. Step 3: Cross multiply
    69,243.34x = 103,820.62 × 29,251.50
  4. Step 4: Simplify right side
    69,243.34x = 3,036,908,865.93
  5. Step 5: Solve for x
    x = 3,036,908,865.93/69,243.34
  6. Step 6: Final answer
    x = 43,858.50

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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.