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Finding the Fourth Proportional to 69,165.28, 103,665.90 and 62,112.20

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Solution

The fourth proportional to 69,165.28, 103,665.90 and 62,112.20 is: 93,094.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,165.28 : 103,665.90 = 62,112.20 : x
  2. Step 2: Convert to fraction form
    69,165.28/103,665.90 = 62,112.20/x
  3. Step 3: Cross multiply
    69,165.28x = 103,665.90 × 62,112.20
  4. Step 4: Simplify right side
    69,165.28x = 6,438,917,113.98
  5. Step 5: Solve for x
    x = 6,438,917,113.98/69,165.28
  6. Step 6: Final answer
    x = 93,094.64

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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.