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Finding the Fourth Proportional to 9,168.84, 12,655.08 and 5,816.28

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Solution

The fourth proportional to 9,168.84, 12,655.08 and 5,816.28 is: 8,027.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,168.84 : 12,655.08 = 5,816.28 : x
  2. Step 2: Convert to fraction form
    9,168.84/12,655.08 = 5,816.28/x
  3. Step 3: Cross multiply
    9,168.84x = 12,655.08 × 5,816.28
  4. Step 4: Simplify right side
    9,168.84x = 73,605,488.70
  5. Step 5: Solve for x
    x = 73,605,488.70/9,168.84
  6. Step 6: Final answer
    x = 8,027.79

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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.