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Finding the Fourth Proportional to 43,153.86, 64,664.85 and 29,061.78

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Solution

The fourth proportional to 43,153.86, 64,664.85 and 29,061.78 is: 43,548.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,153.86 : 64,664.85 = 29,061.78 : x
  2. Step 2: Convert to fraction form
    43,153.86/64,664.85 = 29,061.78/x
  3. Step 3: Cross multiply
    43,153.86x = 64,664.85 × 29,061.78
  4. Step 4: Simplify right side
    43,153.86x = 1,879,275,644.43
  5. Step 5: Solve for x
    x = 1,879,275,644.43/43,153.86
  6. Step 6: Final answer
    x = 43,548.26

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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.