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Finding the Fourth Proportional to 92,855.96, 128,137.66 and 50,413.56

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Solution

The fourth proportional to 92,855.96, 128,137.66 and 50,413.56 is: 69,568.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,855.96 : 128,137.66 = 50,413.56 : x
  2. Step 2: Convert to fraction form
    92,855.96/128,137.66 = 50,413.56/x
  3. Step 3: Cross multiply
    92,855.96x = 128,137.66 × 50,413.56
  4. Step 4: Simplify right side
    92,855.96x = 6,459,875,610.67
  5. Step 5: Solve for x
    x = 6,459,875,610.67/92,855.96
  6. Step 6: Final answer
    x = 69,568.78

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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.