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Finding the Fourth Proportional to 68,638.60, 102,842.70 and 33,502.60

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Solution

The fourth proportional to 68,638.60, 102,842.70 and 33,502.60 is: 50,197.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,638.60 : 102,842.70 = 33,502.60 : x
  2. Step 2: Convert to fraction form
    68,638.60/102,842.70 = 33,502.60/x
  3. Step 3: Cross multiply
    68,638.60x = 102,842.70 × 33,502.60
  4. Step 4: Simplify right side
    68,638.60x = 3,445,497,841.02
  5. Step 5: Solve for x
    x = 3,445,497,841.02/68,638.60
  6. Step 6: Final answer
    x = 50,197.67

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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.