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Finding the Fourth Proportional to 961,189.12, 1,326,384 and 531,435.52

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Solution

The fourth proportional to 961,189.12, 1,326,384 and 531,435.52 is: 733,349.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,189.12 : 1,326,384 = 531,435.52 : x
  2. Step 2: Convert to fraction form
    961,189.12/1,326,384 = 531,435.52/x
  3. Step 3: Cross multiply
    961,189.12x = 1,326,384 × 531,435.52
  4. Step 4: Simplify right side
    961,189.12x = 704,887,570,759.68
  5. Step 5: Solve for x
    x = 704,887,570,759.68/961,189.12
  6. Step 6: Final answer
    x = 733,349.51

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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.