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Finding the Fourth Proportional to 548,676.70, 823,015.05 and 455,364.70

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Solution

The fourth proportional to 548,676.70, 823,015.05 and 455,364.70 is: 683,047.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,676.70 : 823,015.05 = 455,364.70 : x
  2. Step 2: Convert to fraction form
    548,676.70/823,015.05 = 455,364.70/x
  3. Step 3: Cross multiply
    548,676.70x = 823,015.05 × 455,364.70
  4. Step 4: Simplify right side
    548,676.70x = 374,772,001,338.74
  5. Step 5: Solve for x
    x = 374,772,001,338.74/548,676.70
  6. Step 6: Final answer
    x = 683,047.05

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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.