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Finding the Fourth Proportional to 8,664,189.76, 11,958,591.36 and 5,763,702.88

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Solution

The fourth proportional to 8,664,189.76, 11,958,591.36 and 5,763,702.88 is: 7,955,246.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664,189.76 : 11,958,591.36 = 5,763,702.88 : x
  2. Step 2: Convert to fraction form
    8,664,189.76/11,958,591.36 = 5,763,702.88/x
  3. Step 3: Cross multiply
    8,664,189.76x = 11,958,591.36 × 5,763,702.88
  4. Step 4: Simplify right side
    8,664,189.76x = 68,925,767,462,375.11
  5. Step 5: Solve for x
    x = 68,925,767,462,375.11/8,664,189.76
  6. Step 6: Final answer
    x = 7,955,246.75

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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.