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Finding the Fourth Proportional to 685,542.54, 946,354.23 and 453,109.47

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Solution

The fourth proportional to 685,542.54, 946,354.23 and 453,109.47 is: 625,493.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,542.54 : 946,354.23 = 453,109.47 : x
  2. Step 2: Convert to fraction form
    685,542.54/946,354.23 = 453,109.47/x
  3. Step 3: Cross multiply
    685,542.54x = 946,354.23 × 453,109.47
  4. Step 4: Simplify right side
    685,542.54x = 428,802,063,512.30
  5. Step 5: Solve for x
    x = 428,802,063,512.30/685,542.54
  6. Step 6: Final answer
    x = 625,493.01

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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.