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Finding the Fourth Proportional to 7,173.74, 9,896.76 and 5,179.94

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Solution

The fourth proportional to 7,173.74, 9,896.76 and 5,179.94 is: 7,146.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,173.74 : 9,896.76 = 5,179.94 : x
  2. Step 2: Convert to fraction form
    7,173.74/9,896.76 = 5,179.94/x
  3. Step 3: Cross multiply
    7,173.74x = 9,896.76 × 5,179.94
  4. Step 4: Simplify right side
    7,173.74x = 51,264,622.99
  5. Step 5: Solve for x
    x = 51,264,622.99/7,173.74
  6. Step 6: Final answer
    x = 7,146.15

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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.