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Finding the Fourth Proportional to 5,341.80, 7,371.72 and 2,983.80

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Solution

The fourth proportional to 5,341.80, 7,371.72 and 2,983.80 is: 4,117.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,341.80 : 7,371.72 = 2,983.80 : x
  2. Step 2: Convert to fraction form
    5,341.80/7,371.72 = 2,983.80/x
  3. Step 3: Cross multiply
    5,341.80x = 7,371.72 × 2,983.80
  4. Step 4: Simplify right side
    5,341.80x = 21,995,738.14
  5. Step 5: Solve for x
    x = 21,995,738.14/5,341.80
  6. Step 6: Final answer
    x = 4,117.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.