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Finding the Fourth Proportional to 13,972,704.60, 20,959,056.90 and 4,389,051.90

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Solution

The fourth proportional to 13,972,704.60, 20,959,056.90 and 4,389,051.90 is: 6,583,577.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972,704.60 : 20,959,056.90 = 4,389,051.90 : x
  2. Step 2: Convert to fraction form
    13,972,704.60/20,959,056.90 = 4,389,051.90/x
  3. Step 3: Cross multiply
    13,972,704.60x = 20,959,056.90 × 4,389,051.90
  4. Step 4: Simplify right side
    13,972,704.60x = 91,990,388,509,153.11
  5. Step 5: Solve for x
    x = 91,990,388,509,153.11/13,972,704.60
  6. Step 6: Final answer
    x = 6,583,577.85

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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.