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Finding the Fourth Proportional to 188,636.78, 260,303.22 and 111,100.34

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Solution

The fourth proportional to 188,636.78, 260,303.22 and 111,100.34 is: 153,309.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,636.78 : 260,303.22 = 111,100.34 : x
  2. Step 2: Convert to fraction form
    188,636.78/260,303.22 = 111,100.34/x
  3. Step 3: Cross multiply
    188,636.78x = 260,303.22 × 111,100.34
  4. Step 4: Simplify right side
    188,636.78x = 28,919,776,895.85
  5. Step 5: Solve for x
    x = 28,919,776,895.85/188,636.78
  6. Step 6: Final answer
    x = 153,309.32

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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.