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Finding the Fourth Proportional to 68,958.60, 103,437.90 and 33,966.60

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Solution

The fourth proportional to 68,958.60, 103,437.90 and 33,966.60 is: 50,949.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,958.60 : 103,437.90 = 33,966.60 : x
  2. Step 2: Convert to fraction form
    68,958.60/103,437.90 = 33,966.60/x
  3. Step 3: Cross multiply
    68,958.60x = 103,437.90 × 33,966.60
  4. Step 4: Simplify right side
    68,958.60x = 3,513,433,774.14
  5. Step 5: Solve for x
    x = 3,513,433,774.14/68,958.60
  6. Step 6: Final answer
    x = 50,949.90

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1.5x scale

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.