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Finding the Fourth Proportional to 463,915.94, 640,193.58 and 270,311.58

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Solution

The fourth proportional to 463,915.94, 640,193.58 and 270,311.58 is: 373,023.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,915.94 : 640,193.58 = 270,311.58 : x
  2. Step 2: Convert to fraction form
    463,915.94/640,193.58 = 270,311.58/x
  3. Step 3: Cross multiply
    463,915.94x = 640,193.58 × 270,311.58
  4. Step 4: Simplify right side
    463,915.94x = 173,051,738,115.66
  5. Step 5: Solve for x
    x = 173,051,738,115.66/463,915.94
  6. Step 6: Final answer
    x = 373,023.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.