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Finding the Fourth Proportional to 98,661.92, 148,015.20 and 28,546.88

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Solution

The fourth proportional to 98,661.92, 148,015.20 and 28,546.88 is: 42,826.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,661.92 : 148,015.20 = 28,546.88 : x
  2. Step 2: Convert to fraction form
    98,661.92/148,015.20 = 28,546.88/x
  3. Step 3: Cross multiply
    98,661.92x = 148,015.20 × 28,546.88
  4. Step 4: Simplify right side
    98,661.92x = 4,225,372,152.58
  5. Step 5: Solve for x
    x = 4,225,372,152.58/98,661.92
  6. Step 6: Final answer
    x = 42,826.78

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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.