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Finding the Fourth Proportional to 98,622.87, 147,890.57 and 61,181.43

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Solution

The fourth proportional to 98,622.87, 147,890.57 and 61,181.43 is: 91,745.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,622.87 : 147,890.57 = 61,181.43 : x
  2. Step 2: Convert to fraction form
    98,622.87/147,890.57 = 61,181.43/x
  3. Step 3: Cross multiply
    98,622.87x = 147,890.57 × 61,181.43
  4. Step 4: Simplify right side
    98,622.87x = 9,048,156,250.21
  5. Step 5: Solve for x
    x = 9,048,156,250.21/98,622.87
  6. Step 6: Final answer
    x = 91,745.01

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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.