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Finding the Fourth Proportional to 140,144.88, 193,399.88 and 76,482.68

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Solution

The fourth proportional to 140,144.88, 193,399.88 and 76,482.68 is: 105,546.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,144.88 : 193,399.88 = 76,482.68 : x
  2. Step 2: Convert to fraction form
    140,144.88/193,399.88 = 76,482.68/x
  3. Step 3: Cross multiply
    140,144.88x = 193,399.88 × 76,482.68
  4. Step 4: Simplify right side
    140,144.88x = 14,791,741,134.08
  5. Step 5: Solve for x
    x = 14,791,741,134.08/140,144.88
  6. Step 6: Final answer
    x = 105,546.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.