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Finding the Fourth Proportional to 72,361.62, 108,697.95 and 53,699.22

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Solution

The fourth proportional to 72,361.62, 108,697.95 and 53,699.22 is: 80,664.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,361.62 : 108,697.95 = 53,699.22 : x
  2. Step 2: Convert to fraction form
    72,361.62/108,697.95 = 53,699.22/x
  3. Step 3: Cross multiply
    72,361.62x = 108,697.95 × 53,699.22
  4. Step 4: Simplify right side
    72,361.62x = 5,836,995,130.60
  5. Step 5: Solve for x
    x = 5,836,995,130.60/72,361.62
  6. Step 6: Final answer
    x = 80,664.24

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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.