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Finding the Fourth Proportional to 64,709.33, 97,063.92 and 20,339.96

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Solution

The fourth proportional to 64,709.33, 97,063.92 and 20,339.96 is: 30,509.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,709.33 : 97,063.92 = 20,339.96 : x
  2. Step 2: Convert to fraction form
    64,709.33/97,063.92 = 20,339.96/x
  3. Step 3: Cross multiply
    64,709.33x = 97,063.92 × 20,339.96
  4. Step 4: Simplify right side
    64,709.33x = 1,974,275,764.92
  5. Step 5: Solve for x
    x = 1,974,275,764.92/64,709.33
  6. Step 6: Final answer
    x = 30,509.91

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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.