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Finding the Fourth Proportional to 580,556.20, 870,834.30 and 438,838.60

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Solution

The fourth proportional to 580,556.20, 870,834.30 and 438,838.60 is: 658,257.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,556.20 : 870,834.30 = 438,838.60 : x
  2. Step 2: Convert to fraction form
    580,556.20/870,834.30 = 438,838.60/x
  3. Step 3: Cross multiply
    580,556.20x = 870,834.30 × 438,838.60
  4. Step 4: Simplify right side
    580,556.20x = 382,155,705,043.98
  5. Step 5: Solve for x
    x = 382,155,705,043.98/580,556.20
  6. Step 6: Final answer
    x = 658,257.90

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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.