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Finding the Fourth Proportional to 288,880.54, 398,653.78 and 161,556.64

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Solution

The fourth proportional to 288,880.54, 398,653.78 and 161,556.64 is: 222,947.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,880.54 : 398,653.78 = 161,556.64 : x
  2. Step 2: Convert to fraction form
    288,880.54/398,653.78 = 161,556.64/x
  3. Step 3: Cross multiply
    288,880.54x = 398,653.78 × 161,556.64
  4. Step 4: Simplify right side
    288,880.54x = 64,405,165,220.10
  5. Step 5: Solve for x
    x = 64,405,165,220.10/288,880.54
  6. Step 6: Final answer
    x = 222,947.40

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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.