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Finding the Fourth Proportional to 64,969.97, 97,454.96 and 15,721.97

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Solution

The fourth proportional to 64,969.97, 97,454.96 and 15,721.97 is: 23,582.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,969.97 : 97,454.96 = 15,721.97 : x
  2. Step 2: Convert to fraction form
    64,969.97/97,454.96 = 15,721.97/x
  3. Step 3: Cross multiply
    64,969.97x = 97,454.96 × 15,721.97
  4. Step 4: Simplify right side
    64,969.97x = 1,532,183,391.59
  5. Step 5: Solve for x
    x = 1,532,183,391.59/64,969.97
  6. Step 6: Final answer
    x = 23,582.95

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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.