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Finding the Fourth Proportional to 39,928.50, 55,101.06 and 22,023.99

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Solution

The fourth proportional to 39,928.50, 55,101.06 and 22,023.99 is: 30,392.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,928.50 : 55,101.06 = 22,023.99 : x
  2. Step 2: Convert to fraction form
    39,928.50/55,101.06 = 22,023.99/x
  3. Step 3: Cross multiply
    39,928.50x = 55,101.06 × 22,023.99
  4. Step 4: Simplify right side
    39,928.50x = 1,213,545,194.43
  5. Step 5: Solve for x
    x = 1,213,545,194.43/39,928.50
  6. Step 6: Final answer
    x = 30,392.96

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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.