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Finding the Fourth Proportional to 3,589.63, 5,384.51 and 992.63

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Solution

The fourth proportional to 3,589.63, 5,384.51 and 992.63 is: 1,488.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,589.63 : 5,384.51 = 992.63 : x
  2. Step 2: Convert to fraction form
    3,589.63/5,384.51 = 992.63/x
  3. Step 3: Cross multiply
    3,589.63x = 5,384.51 × 992.63
  4. Step 4: Simplify right side
    3,589.63x = 5,344,826.16
  5. Step 5: Solve for x
    x = 5,344,826.16/3,589.63
  6. Step 6: Final answer
    x = 1,488.96

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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.