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Finding the Fourth Proportional to 153,786.75, 212,359.21 and 96,525.31

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Solution

The fourth proportional to 153,786.75, 212,359.21 and 96,525.31 is: 133,288.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,786.75 : 212,359.21 = 96,525.31 : x
  2. Step 2: Convert to fraction form
    153,786.75/212,359.21 = 96,525.31/x
  3. Step 3: Cross multiply
    153,786.75x = 212,359.21 × 96,525.31
  4. Step 4: Simplify right side
    153,786.75x = 20,498,038,576.61
  5. Step 5: Solve for x
    x = 20,498,038,576.61/153,786.75
  6. Step 6: Final answer
    x = 133,288.72

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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.