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Finding the Fourth Proportional to 188,393, 259,866.96 and 111,860.12

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Solution

The fourth proportional to 188,393, 259,866.96 and 111,860.12 is: 154,298.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,393 : 259,866.96 = 111,860.12 : x
  2. Step 2: Convert to fraction form
    188,393/259,866.96 = 111,860.12/x
  3. Step 3: Cross multiply
    188,393x = 259,866.96 × 111,860.12
  4. Step 4: Simplify right side
    188,393x = 29,068,749,329.64
  5. Step 5: Solve for x
    x = 29,068,749,329.64/188,393
  6. Step 6: Final answer
    x = 154,298.46

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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.