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Finding the Fourth Proportional to 10,652,048.40, 15,978,072.60 and 4,263,286.80

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Solution

The fourth proportional to 10,652,048.40, 15,978,072.60 and 4,263,286.80 is: 6,394,930.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,652,048.40 : 15,978,072.60 = 4,263,286.80 : x
  2. Step 2: Convert to fraction form
    10,652,048.40/15,978,072.60 = 4,263,286.80/x
  3. Step 3: Cross multiply
    10,652,048.40x = 15,978,072.60 × 4,263,286.80
  4. Step 4: Simplify right side
    10,652,048.40x = 68,119,106,005,021.67
  5. Step 5: Solve for x
    x = 68,119,106,005,021.67/10,652,048.40
  6. Step 6: Final answer
    x = 6,394,930.20

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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.