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Finding the Fourth Proportional to 8,967,978.88, 13,442,974.88 and 4,647,609.59

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Solution

The fourth proportional to 8,967,978.88, 13,442,974.88 and 4,647,609.59 is: 6,966,753.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,967,978.88 : 13,442,974.88 = 4,647,609.59 : x
  2. Step 2: Convert to fraction form
    8,967,978.88/13,442,974.88 = 4,647,609.59/x
  3. Step 3: Cross multiply
    8,967,978.88x = 13,442,974.88 × 4,647,609.59
  4. Step 4: Simplify right side
    8,967,978.88x = 62,477,698,903,202.23
  5. Step 5: Solve for x
    x = 62,477,698,903,202.23/8,967,978.88
  6. Step 6: Final answer
    x = 6,966,753.58

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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.