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Finding the Fourth Proportional to 62,715.25, 94,072.88 and 21,162.25

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Solution

The fourth proportional to 62,715.25, 94,072.88 and 21,162.25 is: 31,743.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,715.25 : 94,072.88 = 21,162.25 : x
  2. Step 2: Convert to fraction form
    62,715.25/94,072.88 = 21,162.25/x
  3. Step 3: Cross multiply
    62,715.25x = 94,072.88 × 21,162.25
  4. Step 4: Simplify right side
    62,715.25x = 1,990,793,804.78
  5. Step 5: Solve for x
    x = 1,990,793,804.78/62,715.25
  6. Step 6: Final answer
    x = 31,743.38

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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.