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Finding the Fourth Proportional to 404,299.50, 558,112.65 and 261,129.37

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Solution

The fourth proportional to 404,299.50, 558,112.65 and 261,129.37 is: 360,474.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,299.50 : 558,112.65 = 261,129.37 : x
  2. Step 2: Convert to fraction form
    404,299.50/558,112.65 = 261,129.37/x
  3. Step 3: Cross multiply
    404,299.50x = 558,112.65 × 261,129.37
  4. Step 4: Simplify right side
    404,299.50x = 145,739,606,394.02
  5. Step 5: Solve for x
    x = 145,739,606,394.02/404,299.50
  6. Step 6: Final answer
    x = 360,474.36

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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.