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Finding the Fourth Proportional to 640,256.08, 883,540.56 and 353,768.80

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Solution

The fourth proportional to 640,256.08, 883,540.56 and 353,768.80 is: 488,193.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,256.08 : 883,540.56 = 353,768.80 : x
  2. Step 2: Convert to fraction form
    640,256.08/883,540.56 = 353,768.80/x
  3. Step 3: Cross multiply
    640,256.08x = 883,540.56 × 353,768.80
  4. Step 4: Simplify right side
    640,256.08x = 312,569,083,662.53
  5. Step 5: Solve for x
    x = 312,569,083,662.53/640,256.08
  6. Step 6: Final answer
    x = 488,193.85

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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.