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Finding the Fourth Proportional to 89,699.51, 123,785.46 and 49,413.44

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Solution

The fourth proportional to 89,699.51, 123,785.46 and 49,413.44 is: 68,190.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,699.51 : 123,785.46 = 49,413.44 : x
  2. Step 2: Convert to fraction form
    89,699.51/123,785.46 = 49,413.44/x
  3. Step 3: Cross multiply
    89,699.51x = 123,785.46 × 49,413.44
  4. Step 4: Simplify right side
    89,699.51x = 6,116,664,781.66
  5. Step 5: Solve for x
    x = 6,116,664,781.66/89,699.51
  6. Step 6: Final answer
    x = 68,190.62

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1.5x scale

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.