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Finding the Fourth Proportional to 288,580.45, 398,240.39 and 161,256.05

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Solution

The fourth proportional to 288,580.45, 398,240.39 and 161,256.05 is: 222,533.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,580.45 : 398,240.39 = 161,256.05 : x
  2. Step 2: Convert to fraction form
    288,580.45/398,240.39 = 161,256.05/x
  3. Step 3: Cross multiply
    288,580.45x = 398,240.39 × 161,256.05
  4. Step 4: Simplify right side
    288,580.45x = 64,218,672,241.86
  5. Step 5: Solve for x
    x = 64,218,672,241.86/288,580.45
  6. Step 6: Final answer
    x = 222,533.00

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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.