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Finding the Fourth Proportional to 89,684.67, 134,518.13 and 30,519.51

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Solution

The fourth proportional to 89,684.67, 134,518.13 and 30,519.51 is: 45,776.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,684.67 : 134,518.13 = 30,519.51 : x
  2. Step 2: Convert to fraction form
    89,684.67/134,518.13 = 30,519.51/x
  3. Step 3: Cross multiply
    89,684.67x = 134,518.13 × 30,519.51
  4. Step 4: Simplify right side
    89,684.67x = 4,105,427,413.72
  5. Step 5: Solve for x
    x = 4,105,427,413.72/89,684.67
  6. Step 6: Final answer
    x = 45,776.24

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1.5x scale

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.