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Finding the Fourth Proportional to 127,916.70, 191,765.64 and 49,087.50

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Solution

The fourth proportional to 127,916.70, 191,765.64 and 49,087.50 is: 73,589.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,916.70 : 191,765.64 = 49,087.50 : x
  2. Step 2: Convert to fraction form
    127,916.70/191,765.64 = 49,087.50/x
  3. Step 3: Cross multiply
    127,916.70x = 191,765.64 × 49,087.50
  4. Step 4: Simplify right side
    127,916.70x = 9,413,295,853.50
  5. Step 5: Solve for x
    x = 9,413,295,853.50/127,916.70
  6. Step 6: Final answer
    x = 73,589.26

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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.