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Finding the Fourth Proportional to 76,911.10, 107,413.10 and 76,911.10

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Solution

The fourth proportional to 76,911.10, 107,413.10 and 76,911.10 is: 107,413.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,911.10 : 107,413.10 = 76,911.10 : x
  2. Step 2: Convert to fraction form
    76,911.10/107,413.10 = 76,911.10/x
  3. Step 3: Cross multiply
    76,911.10x = 107,413.10 × 76,911.10
  4. Step 4: Simplify right side
    76,911.10x = 8,261,259,675.41
  5. Step 5: Solve for x
    x = 8,261,259,675.41/76,911.10
  6. Step 6: Final answer
    x = 107,413.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.