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Finding the Fourth Proportional to 98,469.84, 147,752.96 and 61,019.90

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Solution

The fourth proportional to 98,469.84, 147,752.96 and 61,019.90 is: 91,559.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,469.84 : 147,752.96 = 61,019.90 : x
  2. Step 2: Convert to fraction form
    98,469.84/147,752.96 = 61,019.90/x
  3. Step 3: Cross multiply
    98,469.84x = 147,752.96 × 61,019.90
  4. Step 4: Simplify right side
    98,469.84x = 9,015,870,843.90
  5. Step 5: Solve for x
    x = 9,015,870,843.90/98,469.84
  6. Step 6: Final answer
    x = 91,559.72

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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.