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Finding the Fourth Proportional to 171,383.40, 256,959.90 and 91,434.60

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Solution

The fourth proportional to 171,383.40, 256,959.90 and 91,434.60 is: 137,090.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,383.40 : 256,959.90 = 91,434.60 : x
  2. Step 2: Convert to fraction form
    171,383.40/256,959.90 = 91,434.60/x
  3. Step 3: Cross multiply
    171,383.40x = 256,959.90 × 91,434.60
  4. Step 4: Simplify right side
    171,383.40x = 23,495,025,672.54
  5. Step 5: Solve for x
    x = 23,495,025,672.54/171,383.40
  6. Step 6: Final answer
    x = 137,090.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.