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Finding the Fourth Proportional to 64,879.80, 89,533.98 and 36,585.29

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Solution

The fourth proportional to 64,879.80, 89,533.98 and 36,585.29 is: 50,487.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,879.80 : 89,533.98 = 36,585.29 : x
  2. Step 2: Convert to fraction form
    64,879.80/89,533.98 = 36,585.29/x
  3. Step 3: Cross multiply
    64,879.80x = 89,533.98 × 36,585.29
  4. Step 4: Simplify right side
    64,879.80x = 3,275,626,623.15
  5. Step 5: Solve for x
    x = 3,275,626,623.15/64,879.80
  6. Step 6: Final answer
    x = 50,487.62

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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.