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Finding the Fourth Proportional to 171,091.35, 256,708.71 and 76,256.19

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Solution

The fourth proportional to 171,091.35, 256,708.71 and 76,256.19 is: 114,416.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,091.35 : 256,708.71 = 76,256.19 : x
  2. Step 2: Convert to fraction form
    171,091.35/256,708.71 = 76,256.19/x
  3. Step 3: Cross multiply
    171,091.35x = 256,708.71 × 76,256.19
  4. Step 4: Simplify right side
    171,091.35x = 19,575,628,164.41
  5. Step 5: Solve for x
    x = 19,575,628,164.41/171,091.35
  6. Step 6: Final answer
    x = 114,416.24

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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.