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Finding the Fourth Proportional to 492,859.60, 739,289.40 and 177,326.80

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Solution

The fourth proportional to 492,859.60, 739,289.40 and 177,326.80 is: 265,990.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,859.60 : 739,289.40 = 177,326.80 : x
  2. Step 2: Convert to fraction form
    492,859.60/739,289.40 = 177,326.80/x
  3. Step 3: Cross multiply
    492,859.60x = 739,289.40 × 177,326.80
  4. Step 4: Simplify right side
    492,859.60x = 131,095,823,575.92
  5. Step 5: Solve for x
    x = 131,095,823,575.92/492,859.60
  6. Step 6: Final answer
    x = 265,990.20

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Similar ratio
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1.5x scale

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.