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Finding the Fourth Proportional to 404,823.80, 607,235.70 and 326,091.80

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Solution

The fourth proportional to 404,823.80, 607,235.70 and 326,091.80 is: 489,137.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,823.80 : 607,235.70 = 326,091.80 : x
  2. Step 2: Convert to fraction form
    404,823.80/607,235.70 = 326,091.80/x
  3. Step 3: Cross multiply
    404,823.80x = 607,235.70 × 326,091.80
  4. Step 4: Simplify right side
    404,823.80x = 198,014,582,437.26
  5. Step 5: Solve for x
    x = 198,014,582,437.26/404,823.80
  6. Step 6: Final answer
    x = 489,137.70

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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.