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Finding the Fourth Proportional to 965,596.80, 1,448,395.20 and 255,696.60

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Solution

The fourth proportional to 965,596.80, 1,448,395.20 and 255,696.60 is: 383,544.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    965,596.80 : 1,448,395.20 = 255,696.60 : x
  2. Step 2: Convert to fraction form
    965,596.80/1,448,395.20 = 255,696.60/x
  3. Step 3: Cross multiply
    965,596.80x = 1,448,395.20 × 255,696.60
  4. Step 4: Simplify right side
    965,596.80x = 370,349,728,096.32
  5. Step 5: Solve for x
    x = 370,349,728,096.32/965,596.80
  6. Step 6: Final answer
    x = 383,544.90

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Double scale
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Similar ratio
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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.