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Finding the Fourth Proportional to 124,319.88, 186,478.44 and 74,413.90

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Solution

The fourth proportional to 124,319.88, 186,478.44 and 74,413.90 is: 111,620.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,319.88 : 186,478.44 = 74,413.90 : x
  2. Step 2: Convert to fraction form
    124,319.88/186,478.44 = 74,413.90/x
  3. Step 3: Cross multiply
    124,319.88x = 186,478.44 × 74,413.90
  4. Step 4: Simplify right side
    124,319.88x = 13,876,588,219.41
  5. Step 5: Solve for x
    x = 13,876,588,219.41/124,319.88
  6. Step 6: Final answer
    x = 111,620.03

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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.