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Finding the Fourth Proportional to 98,469.34, 147,752.21 and 61,019.40

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Solution

The fourth proportional to 98,469.34, 147,752.21 and 61,019.40 is: 91,558.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,469.34 : 147,752.21 = 61,019.40 : x
  2. Step 2: Convert to fraction form
    98,469.34/147,752.21 = 61,019.40/x
  3. Step 3: Cross multiply
    98,469.34x = 147,752.21 × 61,019.40
  4. Step 4: Simplify right side
    98,469.34x = 9,015,751,202.87
  5. Step 5: Solve for x
    x = 9,015,751,202.87/98,469.34
  6. Step 6: Final answer
    x = 91,558.97

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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.