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Finding the Fourth Proportional to 190,889.65, 263,306.64 and 117,269.88

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Solution

The fourth proportional to 190,889.65, 263,306.64 and 117,269.88 is: 161,758.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,889.65 : 263,306.64 = 117,269.88 : x
  2. Step 2: Convert to fraction form
    190,889.65/263,306.64 = 117,269.88/x
  3. Step 3: Cross multiply
    190,889.65x = 263,306.64 × 117,269.88
  4. Step 4: Simplify right side
    190,889.65x = 30,877,938,076.00
  5. Step 5: Solve for x
    x = 30,877,938,076.00/190,889.65
  6. Step 6: Final answer
    x = 161,758.05

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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.