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Finding the Fourth Proportional to 188,651.57, 260,365.61 and 117,054.67

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Solution

The fourth proportional to 188,651.57, 260,365.61 and 117,054.67 is: 161,551.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,651.57 : 260,365.61 = 117,054.67 : x
  2. Step 2: Convert to fraction form
    188,651.57/260,365.61 = 117,054.67/x
  3. Step 3: Cross multiply
    188,651.57x = 260,365.61 × 117,054.67
  4. Step 4: Simplify right side
    188,651.57x = 30,477,010,557.90
  5. Step 5: Solve for x
    x = 30,477,010,557.90/188,651.57
  6. Step 6: Final answer
    x = 161,551.85

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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.