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Finding the Fourth Proportional to 111,766.62, 154,234.86 and 61,465.62

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Solution

The fourth proportional to 111,766.62, 154,234.86 and 61,465.62 is: 84,820.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,766.62 : 154,234.86 = 61,465.62 : x
  2. Step 2: Convert to fraction form
    111,766.62/154,234.86 = 61,465.62/x
  3. Step 3: Cross multiply
    111,766.62x = 154,234.86 × 61,465.62
  4. Step 4: Simplify right side
    111,766.62x = 9,480,141,295.51
  5. Step 5: Solve for x
    x = 9,480,141,295.51/111,766.62
  6. Step 6: Final answer
    x = 84,820.86

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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.