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Finding the Fourth Proportional to 319,779.66, 441,353.70 and 190,726.41

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Solution

The fourth proportional to 319,779.66, 441,353.70 and 190,726.41 is: 263,236.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,779.66 : 441,353.70 = 190,726.41 : x
  2. Step 2: Convert to fraction form
    319,779.66/441,353.70 = 190,726.41/x
  3. Step 3: Cross multiply
    319,779.66x = 441,353.70 × 190,726.41
  4. Step 4: Simplify right side
    319,779.66x = 84,177,806,741.22
  5. Step 5: Solve for x
    x = 84,177,806,741.22/319,779.66
  6. Step 6: Final answer
    x = 263,236.90

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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.