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Finding the Fourth Proportional to 62,642.89, 93,978.16 and 18,273.12

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Solution

The fourth proportional to 62,642.89, 93,978.16 and 18,273.12 is: 27,413.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,642.89 : 93,978.16 = 18,273.12 : x
  2. Step 2: Convert to fraction form
    62,642.89/93,978.16 = 18,273.12/x
  3. Step 3: Cross multiply
    62,642.89x = 93,978.16 × 18,273.12
  4. Step 4: Simplify right side
    62,642.89x = 1,717,274,195.06
  5. Step 5: Solve for x
    x = 1,717,274,195.06/62,642.89
  6. Step 6: Final answer
    x = 27,413.71

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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.