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Finding the Fourth Proportional to 416,939.30, 575,437.96 and 263,991.72

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Solution

The fourth proportional to 416,939.30, 575,437.96 and 263,991.72 is: 364,347.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,939.30 : 575,437.96 = 263,991.72 : x
  2. Step 2: Convert to fraction form
    416,939.30/575,437.96 = 263,991.72/x
  3. Step 3: Cross multiply
    416,939.30x = 575,437.96 × 263,991.72
  4. Step 4: Simplify right side
    416,939.30x = 151,910,856,813.69
  5. Step 5: Solve for x
    x = 151,910,856,813.69/416,939.30
  6. Step 6: Final answer
    x = 364,347.66

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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.