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Finding the Fourth Proportional to 188,309.63, 259,804.04 and 106,626.75

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Solution

The fourth proportional to 188,309.63, 259,804.04 and 106,626.75 is: 147,109.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,309.63 : 259,804.04 = 106,626.75 : x
  2. Step 2: Convert to fraction form
    188,309.63/259,804.04 = 106,626.75/x
  3. Step 3: Cross multiply
    188,309.63x = 259,804.04 × 106,626.75
  4. Step 4: Simplify right side
    188,309.63x = 27,702,059,888.94
  5. Step 5: Solve for x
    x = 27,702,059,888.94/188,309.63
  6. Step 6: Final answer
    x = 147,109.10

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1.5x scale

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.