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Finding the Fourth Proportional to 640,173.94, 883,364.73 and 353,676.94

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Solution

The fourth proportional to 640,173.94, 883,364.73 and 353,676.94 is: 488,032.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,173.94 : 883,364.73 = 353,676.94 : x
  2. Step 2: Convert to fraction form
    640,173.94/883,364.73 = 353,676.94/x
  3. Step 3: Cross multiply
    640,173.94x = 883,364.73 × 353,676.94
  4. Step 4: Simplify right side
    640,173.94x = 312,425,734,610.33
  5. Step 5: Solve for x
    x = 312,425,734,610.33/640,173.94
  6. Step 6: Final answer
    x = 488,032.57

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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.