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Finding the Fourth Proportional to 86,052.69, 118,751.20 and 47,812.59

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Solution

The fourth proportional to 86,052.69, 118,751.20 and 47,812.59 is: 65,980.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,052.69 : 118,751.20 = 47,812.59 : x
  2. Step 2: Convert to fraction form
    86,052.69/118,751.20 = 47,812.59/x
  3. Step 3: Cross multiply
    86,052.69x = 118,751.20 × 47,812.59
  4. Step 4: Simplify right side
    86,052.69x = 5,677,802,318.08
  5. Step 5: Solve for x
    x = 5,677,802,318.08/86,052.69
  6. Step 6: Final answer
    x = 65,980.53

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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.