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Finding the Fourth Proportional to 7,866.11, 10,855.44 and 4,329.53

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Solution

The fourth proportional to 7,866.11, 10,855.44 and 4,329.53 is: 5,974.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,866.11 : 10,855.44 = 4,329.53 : x
  2. Step 2: Convert to fraction form
    7,866.11/10,855.44 = 4,329.53/x
  3. Step 3: Cross multiply
    7,866.11x = 10,855.44 × 4,329.53
  4. Step 4: Simplify right side
    7,866.11x = 46,998,980.28
  5. Step 5: Solve for x
    x = 46,998,980.28/7,866.11
  6. Step 6: Final answer
    x = 5,974.87

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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.