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Finding the Fourth Proportional to 20,192,772.80, 30,299,656.80 and 8,834,369.60

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Solution

The fourth proportional to 20,192,772.80, 30,299,656.80 and 8,834,369.60 is: 13,256,147.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,192,772.80 : 30,299,656.80 = 8,834,369.60 : x
  2. Step 2: Convert to fraction form
    20,192,772.80/30,299,656.80 = 8,834,369.60/x
  3. Step 3: Cross multiply
    20,192,772.80x = 30,299,656.80 × 8,834,369.60
  4. Step 4: Simplify right side
    20,192,772.80x = 267,678,366,924,353.28
  5. Step 5: Solve for x
    x = 267,678,366,924,353.28/20,192,772.80
  6. Step 6: Final answer
    x = 13,256,147.12

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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.