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Finding the Fourth Proportional to 8,867.16, 13,300.74 and 4,478.58

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Solution

The fourth proportional to 8,867.16, 13,300.74 and 4,478.58 is: 6,717.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,867.16 : 13,300.74 = 4,478.58 : x
  2. Step 2: Convert to fraction form
    8,867.16/13,300.74 = 4,478.58/x
  3. Step 3: Cross multiply
    8,867.16x = 13,300.74 × 4,478.58
  4. Step 4: Simplify right side
    8,867.16x = 59,568,428.15
  5. Step 5: Solve for x
    x = 59,568,428.15/8,867.16
  6. Step 6: Final answer
    x = 6,717.87

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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.