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Finding the Fourth Proportional to 114,868.53, 172,419.44 and 72,644.85

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Solution

The fourth proportional to 114,868.53, 172,419.44 and 72,644.85 is: 109,041.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,868.53 : 172,419.44 = 72,644.85 : x
  2. Step 2: Convert to fraction form
    114,868.53/172,419.44 = 72,644.85/x
  3. Step 3: Cross multiply
    114,868.53x = 172,419.44 × 72,644.85
  4. Step 4: Simplify right side
    114,868.53x = 12,525,383,992.66
  5. Step 5: Solve for x
    x = 12,525,383,992.66/114,868.53
  6. Step 6: Final answer
    x = 109,041.04

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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.