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Finding the Fourth Proportional to 649,197.70, 973,796.55 and 205,965.70

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Solution

The fourth proportional to 649,197.70, 973,796.55 and 205,965.70 is: 308,948.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,197.70 : 973,796.55 = 205,965.70 : x
  2. Step 2: Convert to fraction form
    649,197.70/973,796.55 = 205,965.70/x
  3. Step 3: Cross multiply
    649,197.70x = 973,796.55 × 205,965.70
  4. Step 4: Simplify right side
    649,197.70x = 200,568,688,078.34
  5. Step 5: Solve for x
    x = 200,568,688,078.34/649,197.70
  6. Step 6: Final answer
    x = 308,948.55

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Half scale
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Double scale
Find fourth proportional to 649,198.70, 973,798.05 and 205,966.70
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.