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Finding the Fourth Proportional to 188,609.10, 260,283.71 and 108,043.65

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Solution

The fourth proportional to 188,609.10, 260,283.71 and 108,043.65 is: 149,102.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,609.10 : 260,283.71 = 108,043.65 : x
  2. Step 2: Convert to fraction form
    188,609.10/260,283.71 = 108,043.65/x
  3. Step 3: Cross multiply
    188,609.10x = 260,283.71 × 108,043.65
  4. Step 4: Simplify right side
    188,609.10x = 28,122,001,413.23
  5. Step 5: Solve for x
    x = 28,122,001,413.23/188,609.10
  6. Step 6: Final answer
    x = 149,102.04

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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.