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Finding the Fourth Proportional to 647,576.30, 971,364.45 and 505,858.70

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Solution

The fourth proportional to 647,576.30, 971,364.45 and 505,858.70 is: 758,788.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,576.30 : 971,364.45 = 505,858.70 : x
  2. Step 2: Convert to fraction form
    647,576.30/971,364.45 = 505,858.70/x
  3. Step 3: Cross multiply
    647,576.30x = 971,364.45 × 505,858.70
  4. Step 4: Simplify right side
    647,576.30x = 491,373,157,903.22
  5. Step 5: Solve for x
    x = 491,373,157,903.22/647,576.30
  6. Step 6: Final answer
    x = 758,788.05

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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.