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Finding the Fourth Proportional to 8,817.74, 13,220.13 and 4,203.98

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Solution

The fourth proportional to 8,817.74, 13,220.13 and 4,203.98 is: 6,302.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,817.74 : 13,220.13 = 4,203.98 : x
  2. Step 2: Convert to fraction form
    8,817.74/13,220.13 = 4,203.98/x
  3. Step 3: Cross multiply
    8,817.74x = 13,220.13 × 4,203.98
  4. Step 4: Simplify right side
    8,817.74x = 55,577,162.12
  5. Step 5: Solve for x
    x = 55,577,162.12/8,817.74
  6. Step 6: Final answer
    x = 6,302.88

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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.