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Finding the Fourth Proportional to 71,361.06, 98,384.91 and 61,396.56

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Solution

The fourth proportional to 71,361.06, 98,384.91 and 61,396.56 is: 84,646.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,361.06 : 98,384.91 = 61,396.56 : x
  2. Step 2: Convert to fraction form
    71,361.06/98,384.91 = 61,396.56/x
  3. Step 3: Cross multiply
    71,361.06x = 98,384.91 × 61,396.56
  4. Step 4: Simplify right side
    71,361.06x = 6,040,495,029.91
  5. Step 5: Solve for x
    x = 6,040,495,029.91/71,361.06
  6. Step 6: Final answer
    x = 84,646.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.