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Finding the Fourth Proportional to 262,841.36, 394,179.32 and 85,307.36

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Solution

The fourth proportional to 262,841.36, 394,179.32 and 85,307.36 is: 127,934.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,841.36 : 394,179.32 = 85,307.36 : x
  2. Step 2: Convert to fraction form
    262,841.36/394,179.32 = 85,307.36/x
  3. Step 3: Cross multiply
    262,841.36x = 394,179.32 × 85,307.36
  4. Step 4: Simplify right side
    262,841.36x = 33,626,397,155.80
  5. Step 5: Solve for x
    x = 33,626,397,155.80/262,841.36
  6. Step 6: Final answer
    x = 127,934.19

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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.