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Finding the Fourth Proportional to 64,541.57, 89,042.48 and 47,586.15

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Solution

The fourth proportional to 64,541.57, 89,042.48 and 47,586.15 is: 65,650.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,541.57 : 89,042.48 = 47,586.15 : x
  2. Step 2: Convert to fraction form
    64,541.57/89,042.48 = 47,586.15/x
  3. Step 3: Cross multiply
    64,541.57x = 89,042.48 × 47,586.15
  4. Step 4: Simplify right side
    64,541.57x = 4,237,188,809.65
  5. Step 5: Solve for x
    x = 4,237,188,809.65/64,541.57
  6. Step 6: Final answer
    x = 65,650.54

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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.