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Finding the Fourth Proportional to 98,620.20, 147,833.10 and 48,659.40

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Solution

The fourth proportional to 98,620.20, 147,833.10 and 48,659.40 is: 72,941.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,620.20 : 147,833.10 = 48,659.40 : x
  2. Step 2: Convert to fraction form
    98,620.20/147,833.10 = 48,659.40/x
  3. Step 3: Cross multiply
    98,620.20x = 147,833.10 × 48,659.40
  4. Step 4: Simplify right side
    98,620.20x = 7,193,469,946.14
  5. Step 5: Solve for x
    x = 7,193,469,946.14/98,620.20
  6. Step 6: Final answer
    x = 72,941.14

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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.