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Finding the Fourth Proportional to 8,841.80, 12,199.86 and 5,065.16

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Solution

The fourth proportional to 8,841.80, 12,199.86 and 5,065.16 is: 6,988.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,841.80 : 12,199.86 = 5,065.16 : x
  2. Step 2: Convert to fraction form
    8,841.80/12,199.86 = 5,065.16/x
  3. Step 3: Cross multiply
    8,841.80x = 12,199.86 × 5,065.16
  4. Step 4: Simplify right side
    8,841.80x = 61,794,242.88
  5. Step 5: Solve for x
    x = 61,794,242.88/8,841.80
  6. Step 6: Final answer
    x = 6,988.88

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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.