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Finding the Fourth Proportional to 94,571.20, 141,856.80 and 79,364.80

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Solution

The fourth proportional to 94,571.20, 141,856.80 and 79,364.80 is: 119,047.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,571.20 : 141,856.80 = 79,364.80 : x
  2. Step 2: Convert to fraction form
    94,571.20/141,856.80 = 79,364.80/x
  3. Step 3: Cross multiply
    94,571.20x = 141,856.80 × 79,364.80
  4. Step 4: Simplify right side
    94,571.20x = 11,258,436,560.64
  5. Step 5: Solve for x
    x = 11,258,436,560.64/94,571.20
  6. Step 6: Final answer
    x = 119,047.20

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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.