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Finding the Fourth Proportional to 86,055.75, 118,756.98 and 48,330

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Solution

The fourth proportional to 86,055.75, 118,756.98 and 48,330 is: 66,695.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,055.75 : 118,756.98 = 48,330 : x
  2. Step 2: Convert to fraction form
    86,055.75/118,756.98 = 48,330/x
  3. Step 3: Cross multiply
    86,055.75x = 118,756.98 × 48,330
  4. Step 4: Simplify right side
    86,055.75x = 5,739,524,843.40
  5. Step 5: Solve for x
    x = 5,739,524,843.40/86,055.75
  6. Step 6: Final answer
    x = 66,695.43

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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.