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Finding the Fourth Proportional to 64,930.63, 89,605.52 and 36,636.97

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Solution

The fourth proportional to 64,930.63, 89,605.52 and 36,636.97 is: 50,559.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,930.63 : 89,605.52 = 36,636.97 : x
  2. Step 2: Convert to fraction form
    64,930.63/89,605.52 = 36,636.97/x
  3. Step 3: Cross multiply
    64,930.63x = 89,605.52 × 36,636.97
  4. Step 4: Simplify right side
    64,930.63x = 3,282,874,748.07
  5. Step 5: Solve for x
    x = 3,282,874,748.07/64,930.63
  6. Step 6: Final answer
    x = 50,559.72

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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.