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Finding the Fourth Proportional to 102,792.75, 154,211.81 and 43,678.95

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Solution

The fourth proportional to 102,792.75, 154,211.81 and 43,678.95 is: 65,528.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,792.75 : 154,211.81 = 43,678.95 : x
  2. Step 2: Convert to fraction form
    102,792.75/154,211.81 = 43,678.95/x
  3. Step 3: Cross multiply
    102,792.75x = 154,211.81 × 43,678.95
  4. Step 4: Simplify right side
    102,792.75x = 6,735,809,720.00
  5. Step 5: Solve for x
    x = 6,735,809,720.00/102,792.75
  6. Step 6: Final answer
    x = 65,528.06

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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.