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Finding the Fourth Proportional to 11,175.71, 16,763.54 and 2,855.72

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Solution

The fourth proportional to 11,175.71, 16,763.54 and 2,855.72 is: 4,283.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,175.71 : 16,763.54 = 2,855.72 : x
  2. Step 2: Convert to fraction form
    11,175.71/16,763.54 = 2,855.72/x
  3. Step 3: Cross multiply
    11,175.71x = 16,763.54 × 2,855.72
  4. Step 4: Simplify right side
    11,175.71x = 47,871,962.17
  5. Step 5: Solve for x
    x = 47,871,962.17/11,175.71
  6. Step 6: Final answer
    x = 4,283.57

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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.