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Finding the Fourth Proportional to 64,361.80, 96,542.70 and 53,208.10

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Solution

The fourth proportional to 64,361.80, 96,542.70 and 53,208.10 is: 79,812.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,361.80 : 96,542.70 = 53,208.10 : x
  2. Step 2: Convert to fraction form
    64,361.80/96,542.70 = 53,208.10/x
  3. Step 3: Cross multiply
    64,361.80x = 96,542.70 × 53,208.10
  4. Step 4: Simplify right side
    64,361.80x = 5,136,853,635.87
  5. Step 5: Solve for x
    x = 5,136,853,635.87/64,361.80
  6. Step 6: Final answer
    x = 79,812.15

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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.