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Finding the Fourth Proportional to 70,721.82, 97,596.81 and 38,890.94

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Solution

The fourth proportional to 70,721.82, 97,596.81 and 38,890.94 is: 53,669.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,721.82 : 97,596.81 = 38,890.94 : x
  2. Step 2: Convert to fraction form
    70,721.82/97,596.81 = 38,890.94/x
  3. Step 3: Cross multiply
    70,721.82x = 97,596.81 × 38,890.94
  4. Step 4: Simplify right side
    70,721.82x = 3,795,631,681.90
  5. Step 5: Solve for x
    x = 3,795,631,681.90/70,721.82
  6. Step 6: Final answer
    x = 53,669.88

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.