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Finding the Fourth Proportional to 36,687.77, 50,629.29 and 20,775.30

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Solution

The fourth proportional to 36,687.77, 50,629.29 and 20,775.30 is: 28,670.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,687.77 : 50,629.29 = 20,775.30 : x
  2. Step 2: Convert to fraction form
    36,687.77/50,629.29 = 20,775.30/x
  3. Step 3: Cross multiply
    36,687.77x = 50,629.29 × 20,775.30
  4. Step 4: Simplify right side
    36,687.77x = 1,051,838,688.54
  5. Step 5: Solve for x
    x = 1,051,838,688.54/36,687.77
  6. Step 6: Final answer
    x = 28,670.01

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1.5x scale

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.