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Finding the Fourth Proportional to 255,863.76, 353,093.58 and 142,693.80

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Solution

The fourth proportional to 255,863.76, 353,093.58 and 142,693.80 is: 196,918.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,863.76 : 353,093.58 = 142,693.80 : x
  2. Step 2: Convert to fraction form
    255,863.76/353,093.58 = 142,693.80/x
  3. Step 3: Cross multiply
    255,863.76x = 353,093.58 × 142,693.80
  4. Step 4: Simplify right side
    255,863.76x = 50,384,264,685.80
  5. Step 5: Solve for x
    x = 50,384,264,685.80/255,863.76
  6. Step 6: Final answer
    x = 196,918.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.