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Finding the Fourth Proportional to 18,211.10, 25,573.30 and 18,211.10

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Solution

The fourth proportional to 18,211.10, 25,573.30 and 18,211.10 is: 25,573.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,211.10 : 25,573.30 = 18,211.10 : x
  2. Step 2: Convert to fraction form
    18,211.10/25,573.30 = 18,211.10/x
  3. Step 3: Cross multiply
    18,211.10x = 25,573.30 × 18,211.10
  4. Step 4: Simplify right side
    18,211.10x = 465,717,923.63
  5. Step 5: Solve for x
    x = 465,717,923.63/18,211.10
  6. Step 6: Final answer
    x = 25,573.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.