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Finding the Fourth Proportional to 96,415.20, 144,768.60 and 74,253.60

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Solution

The fourth proportional to 96,415.20, 144,768.60 and 74,253.60 is: 111,492.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,415.20 : 144,768.60 = 74,253.60 : x
  2. Step 2: Convert to fraction form
    96,415.20/144,768.60 = 74,253.60/x
  3. Step 3: Cross multiply
    96,415.20x = 144,768.60 × 74,253.60
  4. Step 4: Simplify right side
    96,415.20x = 10,749,589,716.96
  5. Step 5: Solve for x
    x = 10,749,589,716.96/96,415.20
  6. Step 6: Final answer
    x = 111,492.69

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1.5x scale

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.