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Finding the Fourth Proportional to 7,475.84, 10,317.12 and 4,163.84

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Solution

The fourth proportional to 7,475.84, 10,317.12 and 4,163.84 is: 5,746.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,475.84 : 10,317.12 = 4,163.84 : x
  2. Step 2: Convert to fraction form
    7,475.84/10,317.12 = 4,163.84/x
  3. Step 3: Cross multiply
    7,475.84x = 10,317.12 × 4,163.84
  4. Step 4: Simplify right side
    7,475.84x = 42,958,836.94
  5. Step 5: Solve for x
    x = 42,958,836.94/7,475.84
  6. Step 6: Final answer
    x = 5,746.36

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Double scale
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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.