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Finding the Fourth Proportional to 8,845.72, 12,206.80 and 4,866.80

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Solution

The fourth proportional to 8,845.72, 12,206.80 and 4,866.80 is: 6,716.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,845.72 : 12,206.80 = 4,866.80 : x
  2. Step 2: Convert to fraction form
    8,845.72/12,206.80 = 4,866.80/x
  3. Step 3: Cross multiply
    8,845.72x = 12,206.80 × 4,866.80
  4. Step 4: Simplify right side
    8,845.72x = 59,408,054.24
  5. Step 5: Solve for x
    x = 59,408,054.24/8,845.72
  6. Step 6: Final answer
    x = 6,716.02

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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.