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Finding the Fourth Proportional to 591,437.66, 816,183.32 and 319,505.54

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Solution

The fourth proportional to 591,437.66, 816,183.32 and 319,505.54 is: 440,917.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,437.66 : 816,183.32 = 319,505.54 : x
  2. Step 2: Convert to fraction form
    591,437.66/816,183.32 = 319,505.54/x
  3. Step 3: Cross multiply
    591,437.66x = 816,183.32 × 319,505.54
  4. Step 4: Simplify right side
    591,437.66x = 260,775,086,717.15
  5. Step 5: Solve for x
    x = 260,775,086,717.15/591,437.66
  6. Step 6: Final answer
    x = 440,917.29

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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.