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Finding the Fourth Proportional to 4,399.76, 6,584.52 and 4,218.32

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Solution

The fourth proportional to 4,399.76, 6,584.52 and 4,218.32 is: 6,312.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,399.76 : 6,584.52 = 4,218.32 : x
  2. Step 2: Convert to fraction form
    4,399.76/6,584.52 = 4,218.32/x
  3. Step 3: Cross multiply
    4,399.76x = 6,584.52 × 4,218.32
  4. Step 4: Simplify right side
    4,399.76x = 27,775,612.41
  5. Step 5: Solve for x
    x = 27,775,612.41/4,399.76
  6. Step 6: Final answer
    x = 6,312.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.