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Finding the Fourth Proportional to 665,183.90, 997,775.85 and 291,935.90

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Solution

The fourth proportional to 665,183.90, 997,775.85 and 291,935.90 is: 437,903.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,183.90 : 997,775.85 = 291,935.90 : x
  2. Step 2: Convert to fraction form
    665,183.90/997,775.85 = 291,935.90/x
  3. Step 3: Cross multiply
    665,183.90x = 997,775.85 × 291,935.90
  4. Step 4: Simplify right side
    665,183.90x = 291,286,590,768.02
  5. Step 5: Solve for x
    x = 291,286,590,768.02/665,183.90
  6. Step 6: Final answer
    x = 437,903.85

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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.