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Finding the Fourth Proportional to 98,446.72, 147,578.88 and 39,267.84

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Solution

The fourth proportional to 98,446.72, 147,578.88 and 39,267.84 is: 58,865.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,446.72 : 147,578.88 = 39,267.84 : x
  2. Step 2: Convert to fraction form
    98,446.72/147,578.88 = 39,267.84/x
  3. Step 3: Cross multiply
    98,446.72x = 147,578.88 × 39,267.84
  4. Step 4: Simplify right side
    98,446.72x = 5,795,103,847.22
  5. Step 5: Solve for x
    x = 5,795,103,847.22/98,446.72
  6. Step 6: Final answer
    x = 58,865.38

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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.