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Finding the Fourth Proportional to 68,391.74, 102,596.63 and 25,711.22

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Solution

The fourth proportional to 68,391.74, 102,596.63 and 25,711.22 is: 38,570.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,391.74 : 102,596.63 = 25,711.22 : x
  2. Step 2: Convert to fraction form
    68,391.74/102,596.63 = 25,711.22/x
  3. Step 3: Cross multiply
    68,391.74x = 102,596.63 × 25,711.22
  4. Step 4: Simplify right side
    68,391.74x = 2,637,884,653.12
  5. Step 5: Solve for x
    x = 2,637,884,653.12/68,391.74
  6. Step 6: Final answer
    x = 38,570.22

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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.