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Finding the Fourth Proportional to 455,241.45, 683,135.55 and 188,974.20

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Solution

The fourth proportional to 455,241.45, 683,135.55 and 188,974.20 is: 283,574.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,241.45 : 683,135.55 = 188,974.20 : x
  2. Step 2: Convert to fraction form
    455,241.45/683,135.55 = 188,974.20/x
  3. Step 3: Cross multiply
    455,241.45x = 683,135.55 × 188,974.20
  4. Step 4: Simplify right side
    455,241.45x = 129,094,994,052.81
  5. Step 5: Solve for x
    x = 129,094,994,052.81/455,241.45
  6. Step 6: Final answer
    x = 283,574.78

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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.