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Finding the Fourth Proportional to 64,708.72, 97,072.62 and 33,136.62

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Solution

The fourth proportional to 64,708.72, 97,072.62 and 33,136.62 is: 49,709.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,708.72 : 97,072.62 = 33,136.62 : x
  2. Step 2: Convert to fraction form
    64,708.72/97,072.62 = 33,136.62/x
  3. Step 3: Cross multiply
    64,708.72x = 97,072.62 × 33,136.62
  4. Step 4: Simplify right side
    64,708.72x = 3,216,658,521.34
  5. Step 5: Solve for x
    x = 3,216,658,521.34/64,708.72
  6. Step 6: Final answer
    x = 49,709.82

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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.