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Finding the Fourth Proportional to 133,728.71, 200,771.22 and 77,609.10

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Solution

The fourth proportional to 133,728.71, 200,771.22 and 77,609.10 is: 116,517.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,728.71 : 200,771.22 = 77,609.10 : x
  2. Step 2: Convert to fraction form
    133,728.71/200,771.22 = 77,609.10/x
  3. Step 3: Cross multiply
    133,728.71x = 200,771.22 × 77,609.10
  4. Step 4: Simplify right side
    133,728.71x = 15,581,674,734.03
  5. Step 5: Solve for x
    x = 15,581,674,734.03/133,728.71
  6. Step 6: Final answer
    x = 116,517.05

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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.