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Finding the Fourth Proportional to 188,640.92, 260,319.36 and 106,984.16

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Solution

The fourth proportional to 188,640.92, 260,319.36 and 106,984.16 is: 147,635.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,640.92 : 260,319.36 = 106,984.16 : x
  2. Step 2: Convert to fraction form
    188,640.92/260,319.36 = 106,984.16/x
  3. Step 3: Cross multiply
    188,640.92x = 260,319.36 × 106,984.16
  4. Step 4: Simplify right side
    188,640.92x = 27,850,048,061.34
  5. Step 5: Solve for x
    x = 27,850,048,061.34/188,640.92
  6. Step 6: Final answer
    x = 147,635.24

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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.