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Finding the Fourth Proportional to 525,200.40, 787,800.60 and 259,479.90

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Solution

The fourth proportional to 525,200.40, 787,800.60 and 259,479.90 is: 389,219.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,200.40 : 787,800.60 = 259,479.90 : x
  2. Step 2: Convert to fraction form
    525,200.40/787,800.60 = 259,479.90/x
  3. Step 3: Cross multiply
    525,200.40x = 787,800.60 × 259,479.90
  4. Step 4: Simplify right side
    525,200.40x = 204,418,420,907.94
  5. Step 5: Solve for x
    x = 204,418,420,907.94/525,200.40
  6. Step 6: Final answer
    x = 389,219.85

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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.