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Finding the Fourth Proportional to 1,082.66, 1,624.92 and 433.84

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Solution

The fourth proportional to 1,082.66, 1,624.92 and 433.84 is: 651.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,082.66 : 1,624.92 = 433.84 : x
  2. Step 2: Convert to fraction form
    1,082.66/1,624.92 = 433.84/x
  3. Step 3: Cross multiply
    1,082.66x = 1,624.92 × 433.84
  4. Step 4: Simplify right side
    1,082.66x = 704,955.29
  5. Step 5: Solve for x
    x = 704,955.29/1,082.66
  6. Step 6: Final answer
    x = 651.13

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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.