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Finding the Fourth Proportional to 188,552.43, 260,186.90 and 111,015.81

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Solution

The fourth proportional to 188,552.43, 260,186.90 and 111,015.81 is: 153,192.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,552.43 : 260,186.90 = 111,015.81 : x
  2. Step 2: Convert to fraction form
    188,552.43/260,186.90 = 111,015.81/x
  3. Step 3: Cross multiply
    188,552.43x = 260,186.90 × 111,015.81
  4. Step 4: Simplify right side
    188,552.43x = 28,884,858,899.81
  5. Step 5: Solve for x
    x = 28,884,858,899.81/188,552.43
  6. Step 6: Final answer
    x = 153,192.72

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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.