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Finding the Fourth Proportional to 69,690.74, 104,474.14 and 30,226.32

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Solution

The fourth proportional to 69,690.74, 104,474.14 and 30,226.32 is: 45,312.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,690.74 : 104,474.14 = 30,226.32 : x
  2. Step 2: Convert to fraction form
    69,690.74/104,474.14 = 30,226.32/x
  3. Step 3: Cross multiply
    69,690.74x = 104,474.14 × 30,226.32
  4. Step 4: Simplify right side
    69,690.74x = 3,157,868,711.80
  5. Step 5: Solve for x
    x = 3,157,868,711.80/69,690.74
  6. Step 6: Final answer
    x = 45,312.60

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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.