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Finding the Fourth Proportional to 513,879.40, 770,819.10 and 277,683.40

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Solution

The fourth proportional to 513,879.40, 770,819.10 and 277,683.40 is: 416,525.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,879.40 : 770,819.10 = 277,683.40 : x
  2. Step 2: Convert to fraction form
    513,879.40/770,819.10 = 277,683.40/x
  3. Step 3: Cross multiply
    513,879.40x = 770,819.10 × 277,683.40
  4. Step 4: Simplify right side
    513,879.40x = 214,043,668,472.94
  5. Step 5: Solve for x
    x = 214,043,668,472.94/513,879.40
  6. Step 6: Final answer
    x = 416,525.10

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Half scale
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Double scale
Find fourth proportional to 513,880.40, 770,820.60 and 277,684.40
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.