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Finding the Fourth Proportional to 171,029.60, 256,544.40 and 139,536.80

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Solution

The fourth proportional to 171,029.60, 256,544.40 and 139,536.80 is: 209,305.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,029.60 : 256,544.40 = 139,536.80 : x
  2. Step 2: Convert to fraction form
    171,029.60/256,544.40 = 139,536.80/x
  3. Step 3: Cross multiply
    171,029.60x = 256,544.40 × 139,536.80
  4. Step 4: Simplify right side
    171,029.60x = 35,797,384,633.92
  5. Step 5: Solve for x
    x = 35,797,384,633.92/171,029.60
  6. Step 6: Final answer
    x = 209,305.20

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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.