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Finding the Fourth Proportional to 127,907.30, 191,916.22 and 68,673.80

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Solution

The fourth proportional to 127,907.30, 191,916.22 and 68,673.80 is: 103,040.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,907.30 : 191,916.22 = 68,673.80 : x
  2. Step 2: Convert to fraction form
    127,907.30/191,916.22 = 68,673.80/x
  3. Step 3: Cross multiply
    127,907.30x = 191,916.22 × 68,673.80
  4. Step 4: Simplify right side
    127,907.30x = 13,179,616,109.04
  5. Step 5: Solve for x
    x = 13,179,616,109.04/127,907.30
  6. Step 6: Final answer
    x = 103,040.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.