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Finding the Fourth Proportional to 192,666.56, 289,082.89 and 80,368.90

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Solution

The fourth proportional to 192,666.56, 289,082.89 and 80,368.90 is: 120,587.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,666.56 : 289,082.89 = 80,368.90 : x
  2. Step 2: Convert to fraction form
    192,666.56/289,082.89 = 80,368.90/x
  3. Step 3: Cross multiply
    192,666.56x = 289,082.89 × 80,368.90
  4. Step 4: Simplify right side
    192,666.56x = 23,233,272,954.49
  5. Step 5: Solve for x
    x = 23,233,272,954.49/192,666.56
  6. Step 6: Final answer
    x = 120,587.99

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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.