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Finding the Fourth Proportional to 18,706.64, 28,059.96 and 4,855.52

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Solution

The fourth proportional to 18,706.64, 28,059.96 and 4,855.52 is: 7,283.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706.64 : 28,059.96 = 4,855.52 : x
  2. Step 2: Convert to fraction form
    18,706.64/28,059.96 = 4,855.52/x
  3. Step 3: Cross multiply
    18,706.64x = 28,059.96 × 4,855.52
  4. Step 4: Simplify right side
    18,706.64x = 136,245,696.98
  5. Step 5: Solve for x
    x = 136,245,696.98/18,706.64
  6. Step 6: Final answer
    x = 7,283.28

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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.