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Finding the Fourth Proportional to 6,216.76, 8,574.78 and 4,223.87

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Solution

The fourth proportional to 6,216.76, 8,574.78 and 4,223.87 is: 5,825.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,216.76 : 8,574.78 = 4,223.87 : x
  2. Step 2: Convert to fraction form
    6,216.76/8,574.78 = 4,223.87/x
  3. Step 3: Cross multiply
    6,216.76x = 8,574.78 × 4,223.87
  4. Step 4: Simplify right side
    6,216.76x = 36,218,756.00
  5. Step 5: Solve for x
    x = 36,218,756.00/6,216.76
  6. Step 6: Final answer
    x = 5,825.99

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Half scale
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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.