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Finding the Fourth Proportional to 74,494.20, 111,611.70 and 62,830.20

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Solution

The fourth proportional to 74,494.20, 111,611.70 and 62,830.20 is: 94,135.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,494.20 : 111,611.70 = 62,830.20 : x
  2. Step 2: Convert to fraction form
    74,494.20/111,611.70 = 62,830.20/x
  3. Step 3: Cross multiply
    74,494.20x = 111,611.70 × 62,830.20
  4. Step 4: Simplify right side
    74,494.20x = 7,012,585,433.34
  5. Step 5: Solve for x
    x = 7,012,585,433.34/74,494.20
  6. Step 6: Final answer
    x = 94,135.99

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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.