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Finding the Fourth Proportional to 8,616.85, 12,926.59 and 4,397.80

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Solution

The fourth proportional to 8,616.85, 12,926.59 and 4,397.80 is: 6,597.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.85 : 12,926.59 = 4,397.80 : x
  2. Step 2: Convert to fraction form
    8,616.85/12,926.59 = 4,397.80/x
  3. Step 3: Cross multiply
    8,616.85x = 12,926.59 × 4,397.80
  4. Step 4: Simplify right side
    8,616.85x = 56,848,606.31
  5. Step 5: Solve for x
    x = 56,848,606.31/8,616.85
  6. Step 6: Final answer
    x = 6,597.37

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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.