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Finding the Fourth Proportional to 190,662.67, 263,114.76 and 105,779.80

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Solution

The fourth proportional to 190,662.67, 263,114.76 and 105,779.80 is: 145,976.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,662.67 : 263,114.76 = 105,779.80 : x
  2. Step 2: Convert to fraction form
    190,662.67/263,114.76 = 105,779.80/x
  3. Step 3: Cross multiply
    190,662.67x = 263,114.76 × 105,779.80
  4. Step 4: Simplify right side
    190,662.67x = 27,832,226,689.85
  5. Step 5: Solve for x
    x = 27,832,226,689.85/190,662.67
  6. Step 6: Final answer
    x = 145,976.28

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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.