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Finding the Fourth Proportional to 685,517.94, 946,024.47 and 394,968.96

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Solution

The fourth proportional to 685,517.94, 946,024.47 and 394,968.96 is: 545,062.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,517.94 : 946,024.47 = 394,968.96 : x
  2. Step 2: Convert to fraction form
    685,517.94/946,024.47 = 394,968.96/x
  3. Step 3: Cross multiply
    685,517.94x = 946,024.47 × 394,968.96
  4. Step 4: Simplify right side
    685,517.94x = 373,650,301,050.45
  5. Step 5: Solve for x
    x = 373,650,301,050.45/685,517.94
  6. Step 6: Final answer
    x = 545,062.76

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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.