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Finding the Fourth Proportional to 325,852.70, 489,216.45 and 208,046.30

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Solution

The fourth proportional to 325,852.70, 489,216.45 and 208,046.30 is: 312,348.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,852.70 : 489,216.45 = 208,046.30 : x
  2. Step 2: Convert to fraction form
    325,852.70/489,216.45 = 208,046.30/x
  3. Step 3: Cross multiply
    325,852.70x = 489,216.45 × 208,046.30
  4. Step 4: Simplify right side
    325,852.70x = 101,779,672,321.64
  5. Step 5: Solve for x
    x = 101,779,672,321.64/325,852.70
  6. Step 6: Final answer
    x = 312,348.72

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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.