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Finding the Fourth Proportional to 13,479,375.60, 20,219,063.40 and 13,479,375.60

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Solution

The fourth proportional to 13,479,375.60, 20,219,063.40 and 13,479,375.60 is: 20,219,063.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479,375.60 : 20,219,063.40 = 13,479,375.60 : x
  2. Step 2: Convert to fraction form
    13,479,375.60/20,219,063.40 = 13,479,375.60/x
  3. Step 3: Cross multiply
    13,479,375.60x = 20,219,063.40 × 13,479,375.60
  4. Step 4: Simplify right side
    13,479,375.60x = 272,540,349,848,813
  5. Step 5: Solve for x
    x = 272,540,349,848,813/13,479,375.60
  6. Step 6: Final answer
    x = 20,219,063.40

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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.