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Finding the Fourth Proportional to 188,869.92, 260,641.44 and 108,300.48

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Solution

The fourth proportional to 188,869.92, 260,641.44 and 108,300.48 is: 149,455.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,869.92 : 260,641.44 = 108,300.48 : x
  2. Step 2: Convert to fraction form
    188,869.92/260,641.44 = 108,300.48/x
  3. Step 3: Cross multiply
    188,869.92x = 260,641.44 × 108,300.48
  4. Step 4: Simplify right side
    188,869.92x = 28,227,593,059.89
  5. Step 5: Solve for x
    x = 28,227,593,059.89/188,869.92
  6. Step 6: Final answer
    x = 149,455.21

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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.