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Finding the Fourth Proportional to 217,855.80, 325,908.90 and 188,598.60

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Solution

The fourth proportional to 217,855.80, 325,908.90 and 188,598.60 is: 282,140.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,855.80 : 325,908.90 = 188,598.60 : x
  2. Step 2: Convert to fraction form
    217,855.80/325,908.90 = 188,598.60/x
  3. Step 3: Cross multiply
    217,855.80x = 325,908.90 × 188,598.60
  4. Step 4: Simplify right side
    217,855.80x = 61,465,962,267.54
  5. Step 5: Solve for x
    x = 61,465,962,267.54/217,855.80
  6. Step 6: Final answer
    x = 282,140.58

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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.