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Finding the Fourth Proportional to 100,561.52, 150,905.80 and 56,217.36

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Solution

The fourth proportional to 100,561.52, 150,905.80 and 56,217.36 is: 84,361.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,561.52 : 150,905.80 = 56,217.36 : x
  2. Step 2: Convert to fraction form
    100,561.52/150,905.80 = 56,217.36/x
  3. Step 3: Cross multiply
    100,561.52x = 150,905.80 × 56,217.36
  4. Step 4: Simplify right side
    100,561.52x = 8,483,525,684.69
  5. Step 5: Solve for x
    x = 8,483,525,684.69/100,561.52
  6. Step 6: Final answer
    x = 84,361.55

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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.