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Finding the Fourth Proportional to 673,833.48, 929,865.80 and 372,021

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Solution

The fourth proportional to 673,833.48, 929,865.80 and 372,021 is: 513,375.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,833.48 : 929,865.80 = 372,021 : x
  2. Step 2: Convert to fraction form
    673,833.48/929,865.80 = 372,021/x
  3. Step 3: Cross multiply
    673,833.48x = 929,865.80 × 372,021
  4. Step 4: Simplify right side
    673,833.48x = 345,929,604,781.80
  5. Step 5: Solve for x
    x = 345,929,604,781.80/673,833.48
  6. Step 6: Final answer
    x = 513,375.51

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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.