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Finding the Fourth Proportional to 118,728.36, 178,121.34 and 35,622.36

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Solution

The fourth proportional to 118,728.36, 178,121.34 and 35,622.36 is: 53,442.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,728.36 : 178,121.34 = 35,622.36 : x
  2. Step 2: Convert to fraction form
    118,728.36/178,121.34 = 35,622.36/x
  3. Step 3: Cross multiply
    118,728.36x = 178,121.34 × 35,622.36
  4. Step 4: Simplify right side
    118,728.36x = 6,345,102,497.16
  5. Step 5: Solve for x
    x = 6,345,102,497.16/118,728.36
  6. Step 6: Final answer
    x = 53,442.18

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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.