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Finding the Fourth Proportional to 190,188.60, 262,300.80 and 122,216.64

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Solution

The fourth proportional to 190,188.60, 262,300.80 and 122,216.64 is: 168,556.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,188.60 : 262,300.80 = 122,216.64 : x
  2. Step 2: Convert to fraction form
    190,188.60/262,300.80 = 122,216.64/x
  3. Step 3: Cross multiply
    190,188.60x = 262,300.80 × 122,216.64
  4. Step 4: Simplify right side
    190,188.60x = 32,057,522,445.31
  5. Step 5: Solve for x
    x = 32,057,522,445.31/190,188.60
  6. Step 6: Final answer
    x = 168,556.49

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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.