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Finding the Fourth Proportional to 60,751.32, 91,129.74 and 18,628.32

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Solution

The fourth proportional to 60,751.32, 91,129.74 and 18,628.32 is: 27,943.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,751.32 : 91,129.74 = 18,628.32 : x
  2. Step 2: Convert to fraction form
    60,751.32/91,129.74 = 18,628.32/x
  3. Step 3: Cross multiply
    60,751.32x = 91,129.74 × 18,628.32
  4. Step 4: Simplify right side
    60,751.32x = 1,697,593,958.24
  5. Step 5: Solve for x
    x = 1,697,593,958.24/60,751.32
  6. Step 6: Final answer
    x = 27,943.33

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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.