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Finding the Fourth Proportional to 19,646,648.28, 29,474,691.42 and 7,515,913.32

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Solution

The fourth proportional to 19,646,648.28, 29,474,691.42 and 7,515,913.32 is: 11,275,675.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,646,648.28 : 29,474,691.42 = 7,515,913.32 : x
  2. Step 2: Convert to fraction form
    19,646,648.28/29,474,691.42 = 7,515,913.32/x
  3. Step 3: Cross multiply
    19,646,648.28x = 29,474,691.42 × 7,515,913.32
  4. Step 4: Simplify right side
    19,646,648.28x = 221,529,225,846,467.75
  5. Step 5: Solve for x
    x = 221,529,225,846,467.75/19,646,648.28
  6. Step 6: Final answer
    x = 11,275,675.25

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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.