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Finding the Fourth Proportional to 15,706.70, 21,675.46 and 8,633.27

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Solution

The fourth proportional to 15,706.70, 21,675.46 and 8,633.27 is: 11,914.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,706.70 : 21,675.46 = 8,633.27 : x
  2. Step 2: Convert to fraction form
    15,706.70/21,675.46 = 8,633.27/x
  3. Step 3: Cross multiply
    15,706.70x = 21,675.46 × 8,633.27
  4. Step 4: Simplify right side
    15,706.70x = 187,130,098.55
  5. Step 5: Solve for x
    x = 187,130,098.55/15,706.70
  6. Step 6: Final answer
    x = 11,914.03

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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.