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Finding the Fourth Proportional to 171,616.60, 257,079.30 and 119,085.40

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Solution

The fourth proportional to 171,616.60, 257,079.30 and 119,085.40 is: 178,388.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,616.60 : 257,079.30 = 119,085.40 : x
  2. Step 2: Convert to fraction form
    171,616.60/257,079.30 = 119,085.40/x
  3. Step 3: Cross multiply
    171,616.60x = 257,079.30 × 119,085.40
  4. Step 4: Simplify right side
    171,616.60x = 30,614,391,272.22
  5. Step 5: Solve for x
    x = 30,614,391,272.22/171,616.60
  6. Step 6: Final answer
    x = 178,388.29

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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.