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Finding the Fourth Proportional to 188,891.92, 260,588.64 and 108,300.96

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Solution

The fourth proportional to 188,891.92, 260,588.64 and 108,300.96 is: 149,408.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,891.92 : 260,588.64 = 108,300.96 : x
  2. Step 2: Convert to fraction form
    188,891.92/260,588.64 = 108,300.96/x
  3. Step 3: Cross multiply
    188,891.92x = 260,588.64 × 108,300.96
  4. Step 4: Simplify right side
    188,891.92x = 28,221,999,877.09
  5. Step 5: Solve for x
    x = 28,221,999,877.09/188,891.92
  6. Step 6: Final answer
    x = 149,408.19

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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.