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Finding the Fourth Proportional to 8,855.12, 13,282.68 and 2,699.12

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Solution

The fourth proportional to 8,855.12, 13,282.68 and 2,699.12 is: 4,048.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,855.12 : 13,282.68 = 2,699.12 : x
  2. Step 2: Convert to fraction form
    8,855.12/13,282.68 = 2,699.12/x
  3. Step 3: Cross multiply
    8,855.12x = 13,282.68 × 2,699.12
  4. Step 4: Simplify right side
    8,855.12x = 35,851,547.24
  5. Step 5: Solve for x
    x = 35,851,547.24/8,855.12
  6. Step 6: Final answer
    x = 4,048.68

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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.