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Finding the Fourth Proportional to 69,082.30, 103,623.42 and 45,703.30

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Solution

The fourth proportional to 69,082.30, 103,623.42 and 45,703.30 is: 68,554.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,082.30 : 103,623.42 = 45,703.30 : x
  2. Step 2: Convert to fraction form
    69,082.30/103,623.42 = 45,703.30/x
  3. Step 3: Cross multiply
    69,082.30x = 103,623.42 × 45,703.30
  4. Step 4: Simplify right side
    69,082.30x = 4,735,932,251.29
  5. Step 5: Solve for x
    x = 4,735,932,251.29/69,082.30
  6. Step 6: Final answer
    x = 68,554.93

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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.