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Finding the Fourth Proportional to 492,366.80, 738,550.20 and 489,256.40

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Solution

The fourth proportional to 492,366.80, 738,550.20 and 489,256.40 is: 733,884.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,366.80 : 738,550.20 = 489,256.40 : x
  2. Step 2: Convert to fraction form
    492,366.80/738,550.20 = 489,256.40/x
  3. Step 3: Cross multiply
    492,366.80x = 738,550.20 × 489,256.40
  4. Step 4: Simplify right side
    492,366.80x = 361,340,412,071.28
  5. Step 5: Solve for x
    x = 361,340,412,071.28/492,366.80
  6. Step 6: Final answer
    x = 733,884.60

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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.