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Finding the Fourth Proportional to 78,413.55, 108,186.84 and 44,416.62

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Solution

The fourth proportional to 78,413.55, 108,186.84 and 44,416.62 is: 61,281.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,413.55 : 108,186.84 = 44,416.62 : x
  2. Step 2: Convert to fraction form
    78,413.55/108,186.84 = 44,416.62/x
  3. Step 3: Cross multiply
    78,413.55x = 108,186.84 × 44,416.62
  4. Step 4: Simplify right side
    78,413.55x = 4,805,293,761.28
  5. Step 5: Solve for x
    x = 4,805,293,761.28/78,413.55
  6. Step 6: Final answer
    x = 61,281.42

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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.