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Finding the Fourth Proportional to 43,485.54, 65,211.61 and 15,400.41

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Solution

The fourth proportional to 43,485.54, 65,211.61 and 15,400.41 is: 23,094.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,485.54 : 65,211.61 = 15,400.41 : x
  2. Step 2: Convert to fraction form
    43,485.54/65,211.61 = 15,400.41/x
  3. Step 3: Cross multiply
    43,485.54x = 65,211.61 × 15,400.41
  4. Step 4: Simplify right side
    43,485.54x = 1,004,285,600.09
  5. Step 5: Solve for x
    x = 1,004,285,600.09/43,485.54
  6. Step 6: Final answer
    x = 23,094.70

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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.