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Finding the Fourth Proportional to 7,167.77, 9,896.34 and 5,486.16

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Solution

The fourth proportional to 7,167.77, 9,896.34 and 5,486.16 is: 7,574.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,167.77 : 9,896.34 = 5,486.16 : x
  2. Step 2: Convert to fraction form
    7,167.77/9,896.34 = 5,486.16/x
  3. Step 3: Cross multiply
    7,167.77x = 9,896.34 × 5,486.16
  4. Step 4: Simplify right side
    7,167.77x = 54,292,904.65
  5. Step 5: Solve for x
    x = 54,292,904.65/7,167.77
  6. Step 6: Final answer
    x = 7,574.59

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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.