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Finding the Fourth Proportional to 114,596.37, 171,838.80 and 39,720.78

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Solution

The fourth proportional to 114,596.37, 171,838.80 and 39,720.78 is: 59,561.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,596.37 : 171,838.80 = 39,720.78 : x
  2. Step 2: Convert to fraction form
    114,596.37/171,838.80 = 39,720.78/x
  3. Step 3: Cross multiply
    114,596.37x = 171,838.80 × 39,720.78
  4. Step 4: Simplify right side
    114,596.37x = 6,825,571,170.26
  5. Step 5: Solve for x
    x = 6,825,571,170.26/114,596.37
  6. Step 6: Final answer
    x = 59,561.84

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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.