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Finding the Fourth Proportional to 74,878.44, 103,332.24 and 43,053.60

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Solution

The fourth proportional to 74,878.44, 103,332.24 and 43,053.60 is: 59,413.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,878.44 : 103,332.24 = 43,053.60 : x
  2. Step 2: Convert to fraction form
    74,878.44/103,332.24 = 43,053.60/x
  3. Step 3: Cross multiply
    74,878.44x = 103,332.24 × 43,053.60
  4. Step 4: Simplify right side
    74,878.44x = 4,448,824,928.06
  5. Step 5: Solve for x
    x = 4,448,824,928.06/74,878.44
  6. Step 6: Final answer
    x = 59,413.96

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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.