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Finding the Fourth Proportional to 224,200.60, 336,190.70 and 74,390

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Solution

The fourth proportional to 224,200.60, 336,190.70 and 74,390 is: 111,548.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,200.60 : 336,190.70 = 74,390 : x
  2. Step 2: Convert to fraction form
    224,200.60/336,190.70 = 74,390/x
  3. Step 3: Cross multiply
    224,200.60x = 336,190.70 × 74,390
  4. Step 4: Simplify right side
    224,200.60x = 25,009,226,173
  5. Step 5: Solve for x
    x = 25,009,226,173/224,200.60
  6. Step 6: Final answer
    x = 111,548.44

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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.