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Finding the Fourth Proportional to 13,807,321.22, 20,710,970.90 and 3,709,942.22

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Solution

The fourth proportional to 13,807,321.22, 20,710,970.90 and 3,709,942.22 is: 5,564,910.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,807,321.22 : 20,710,970.90 = 3,709,942.22 : x
  2. Step 2: Convert to fraction form
    13,807,321.22/20,710,970.90 = 3,709,942.22/x
  3. Step 3: Cross multiply
    13,807,321.22x = 20,710,970.90 × 3,709,942.22
  4. Step 4: Simplify right side
    13,807,321.22x = 76,836,505,392,329.11
  5. Step 5: Solve for x
    x = 76,836,505,392,329.11/13,807,321.22
  6. Step 6: Final answer
    x = 5,564,910.39

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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.