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Finding the Fourth Proportional to 443,945.21, 612,684.41 and 253,020.11

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Solution

The fourth proportional to 443,945.21, 612,684.41 and 253,020.11 is: 349,190.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,945.21 : 612,684.41 = 253,020.11 : x
  2. Step 2: Convert to fraction form
    443,945.21/612,684.41 = 253,020.11/x
  3. Step 3: Cross multiply
    443,945.21x = 612,684.41 × 253,020.11
  4. Step 4: Simplify right side
    443,945.21x = 155,021,472,484.96
  5. Step 5: Solve for x
    x = 155,021,472,484.96/443,945.21
  6. Step 6: Final answer
    x = 349,190.55

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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.