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Finding the Fourth Proportional to 519,676.38, 717,155.56 and 281,212.38

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Solution

The fourth proportional to 519,676.38, 717,155.56 and 281,212.38 is: 388,074.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,676.38 : 717,155.56 = 281,212.38 : x
  2. Step 2: Convert to fraction form
    519,676.38/717,155.56 = 281,212.38/x
  3. Step 3: Cross multiply
    519,676.38x = 717,155.56 × 281,212.38
  4. Step 4: Simplify right side
    519,676.38x = 201,673,021,857.83
  5. Step 5: Solve for x
    x = 201,673,021,857.83/519,676.38
  6. Step 6: Final answer
    x = 388,074.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.