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Finding the Fourth Proportional to 8,856,978.40, 13,285,467.60 and 3,176,464.60

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Solution

The fourth proportional to 8,856,978.40, 13,285,467.60 and 3,176,464.60 is: 4,764,696.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,856,978.40 : 13,285,467.60 = 3,176,464.60 : x
  2. Step 2: Convert to fraction form
    8,856,978.40/13,285,467.60 = 3,176,464.60/x
  3. Step 3: Cross multiply
    8,856,978.40x = 13,285,467.60 × 3,176,464.60
  4. Step 4: Simplify right side
    8,856,978.40x = 42,200,817,525,846.96
  5. Step 5: Solve for x
    x = 42,200,817,525,846.96/8,856,978.40
  6. Step 6: Final answer
    x = 4,764,696.90

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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.