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Finding the Fourth Proportional to 68,424, 94,413.60 and 45,726.48

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Solution

The fourth proportional to 68,424, 94,413.60 and 45,726.48 is: 63,094.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,424 : 94,413.60 = 45,726.48 : x
  2. Step 2: Convert to fraction form
    68,424/94,413.60 = 45,726.48/x
  3. Step 3: Cross multiply
    68,424x = 94,413.60 × 45,726.48
  4. Step 4: Simplify right side
    68,424x = 4,317,201,592.13
  5. Step 5: Solve for x
    x = 4,317,201,592.13/68,424
  6. Step 6: Final answer
    x = 63,094.84

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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.