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Finding the Fourth Proportional to 53,906.80, 80,665.80 and 36,410.80

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Solution

The fourth proportional to 53,906.80, 80,665.80 and 36,410.80 is: 54,484.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,906.80 : 80,665.80 = 36,410.80 : x
  2. Step 2: Convert to fraction form
    53,906.80/80,665.80 = 36,410.80/x
  3. Step 3: Cross multiply
    53,906.80x = 80,665.80 × 36,410.80
  4. Step 4: Simplify right side
    53,906.80x = 2,937,106,310.64
  5. Step 5: Solve for x
    x = 2,937,106,310.64/53,906.80
  6. Step 6: Final answer
    x = 54,484.89

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1.5x scale

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.