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Finding the Fourth Proportional to 64,619.02, 89,179.14 and 36,328.96

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Solution

The fourth proportional to 64,619.02, 89,179.14 and 36,328.96 is: 50,136.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,619.02 : 89,179.14 = 36,328.96 : x
  2. Step 2: Convert to fraction form
    64,619.02/89,179.14 = 36,328.96/x
  3. Step 3: Cross multiply
    64,619.02x = 89,179.14 × 36,328.96
  4. Step 4: Simplify right side
    64,619.02x = 3,239,785,409.89
  5. Step 5: Solve for x
    x = 3,239,785,409.89/64,619.02
  6. Step 6: Final answer
    x = 50,136.72

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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.