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Finding the Fourth Proportional to 217,851.80, 325,902.90 and 188,594.60

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Solution

The fourth proportional to 217,851.80, 325,902.90 and 188,594.60 is: 282,134.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,851.80 : 325,902.90 = 188,594.60 : x
  2. Step 2: Convert to fraction form
    217,851.80/325,902.90 = 188,594.60/x
  3. Step 3: Cross multiply
    217,851.80x = 325,902.90 × 188,594.60
  4. Step 4: Simplify right side
    217,851.80x = 61,463,527,064.34
  5. Step 5: Solve for x
    x = 61,463,527,064.34/217,851.80
  6. Step 6: Final answer
    x = 282,134.58

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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.