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Finding the Fourth Proportional to 171,106.40, 256,951.20 and 121,534.40

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Solution

The fourth proportional to 171,106.40, 256,951.20 and 121,534.40 is: 182,508.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,106.40 : 256,951.20 = 121,534.40 : x
  2. Step 2: Convert to fraction form
    171,106.40/256,951.20 = 121,534.40/x
  3. Step 3: Cross multiply
    171,106.40x = 256,951.20 × 121,534.40
  4. Step 4: Simplify right side
    171,106.40x = 31,228,409,921.28
  5. Step 5: Solve for x
    x = 31,228,409,921.28/171,106.40
  6. Step 6: Final answer
    x = 182,508.72

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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.