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Finding the Fourth Proportional to 133,551.60, 200,068.20 and 74,281.20

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Solution

The fourth proportional to 133,551.60, 200,068.20 and 74,281.20 is: 111,277.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,551.60 : 200,068.20 = 74,281.20 : x
  2. Step 2: Convert to fraction form
    133,551.60/200,068.20 = 74,281.20/x
  3. Step 3: Cross multiply
    133,551.60x = 200,068.20 × 74,281.20
  4. Step 4: Simplify right side
    133,551.60x = 14,861,305,977.84
  5. Step 5: Solve for x
    x = 14,861,305,977.84/133,551.60
  6. Step 6: Final answer
    x = 111,277.63

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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.