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Finding the Fourth Proportional to 18,627.56, 25,701.52 and 11,819.10

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Solution

The fourth proportional to 18,627.56, 25,701.52 and 11,819.10 is: 16,307.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,627.56 : 25,701.52 = 11,819.10 : x
  2. Step 2: Convert to fraction form
    18,627.56/25,701.52 = 11,819.10/x
  3. Step 3: Cross multiply
    18,627.56x = 25,701.52 × 11,819.10
  4. Step 4: Simplify right side
    18,627.56x = 303,768,835.03
  5. Step 5: Solve for x
    x = 303,768,835.03/18,627.56
  6. Step 6: Final answer
    x = 16,307.49

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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.