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Finding the Fourth Proportional to 188,618.49, 282,946.21 and 68,708.03

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Solution

The fourth proportional to 188,618.49, 282,946.21 and 68,708.03 is: 103,068.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,618.49 : 282,946.21 = 68,708.03 : x
  2. Step 2: Convert to fraction form
    188,618.49/282,946.21 = 68,708.03/x
  3. Step 3: Cross multiply
    188,618.49x = 282,946.21 × 68,708.03
  4. Step 4: Simplify right side
    188,618.49x = 19,440,675,098.57
  5. Step 5: Solve for x
    x = 19,440,675,098.57/188,618.49
  6. Step 6: Final answer
    x = 103,068.77

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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.