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Finding the Fourth Proportional to 35,995.80, 53,991.98 and 12,620.46

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Solution

The fourth proportional to 35,995.80, 53,991.98 and 12,620.46 is: 18,930.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,995.80 : 53,991.98 = 12,620.46 : x
  2. Step 2: Convert to fraction form
    35,995.80/53,991.98 = 12,620.46/x
  3. Step 3: Cross multiply
    35,995.80x = 53,991.98 × 12,620.46
  4. Step 4: Simplify right side
    35,995.80x = 681,403,623.91
  5. Step 5: Solve for x
    x = 681,403,623.91/35,995.80
  6. Step 6: Final answer
    x = 18,930.09

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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.