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Finding the Fourth Proportional to 110,413.70, 165,620.55 and 77,063.30

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Solution

The fourth proportional to 110,413.70, 165,620.55 and 77,063.30 is: 115,594.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,413.70 : 165,620.55 = 77,063.30 : x
  2. Step 2: Convert to fraction form
    110,413.70/165,620.55 = 77,063.30/x
  3. Step 3: Cross multiply
    110,413.70x = 165,620.55 × 77,063.30
  4. Step 4: Simplify right side
    110,413.70x = 12,763,266,130.82
  5. Step 5: Solve for x
    x = 12,763,266,130.82/110,413.70
  6. Step 6: Final answer
    x = 115,594.95

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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.