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Finding the Fourth Proportional to 272,510.25, 408,779.46 and 82,955.67

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Solution

The fourth proportional to 272,510.25, 408,779.46 and 82,955.67 is: 124,437.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,510.25 : 408,779.46 = 82,955.67 : x
  2. Step 2: Convert to fraction form
    272,510.25/408,779.46 = 82,955.67/x
  3. Step 3: Cross multiply
    272,510.25x = 408,779.46 × 82,955.67
  4. Step 4: Simplify right side
    272,510.25x = 33,910,573,986.54
  5. Step 5: Solve for x
    x = 33,910,573,986.54/272,510.25
  6. Step 6: Final answer
    x = 124,437.79

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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.