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Finding the Fourth Proportional to 61,955.10, 86,912.10 and 61,955.10

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Solution

The fourth proportional to 61,955.10, 86,912.10 and 61,955.10 is: 86,912.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,955.10 : 86,912.10 = 61,955.10 : x
  2. Step 2: Convert to fraction form
    61,955.10/86,912.10 = 61,955.10/x
  3. Step 3: Cross multiply
    61,955.10x = 86,912.10 × 61,955.10
  4. Step 4: Simplify right side
    61,955.10x = 5,384,647,846.71
  5. Step 5: Solve for x
    x = 5,384,647,846.71/61,955.10
  6. Step 6: Final answer
    x = 86,912.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.