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Finding the Fourth Proportional to 98,626.56, 147,976.16 and 70,768.96

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Solution

The fourth proportional to 98,626.56, 147,976.16 and 70,768.96 is: 106,179.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,626.56 : 147,976.16 = 70,768.96 : x
  2. Step 2: Convert to fraction form
    98,626.56/147,976.16 = 70,768.96/x
  3. Step 3: Cross multiply
    98,626.56x = 147,976.16 × 70,768.96
  4. Step 4: Simplify right side
    98,626.56x = 10,472,118,947.99
  5. Step 5: Solve for x
    x = 10,472,118,947.99/98,626.56
  6. Step 6: Final answer
    x = 106,179.50

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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.