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Finding the Fourth Proportional to 449,129.66, 619,903.13 and 296,195.45

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Solution

The fourth proportional to 449,129.66, 619,903.13 and 296,195.45 is: 408,818.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,129.66 : 619,903.13 = 296,195.45 : x
  2. Step 2: Convert to fraction form
    449,129.66/619,903.13 = 296,195.45/x
  3. Step 3: Cross multiply
    449,129.66x = 619,903.13 × 296,195.45
  4. Step 4: Simplify right side
    449,129.66x = 183,612,481,966.27
  5. Step 5: Solve for x
    x = 183,612,481,966.27/449,129.66
  6. Step 6: Final answer
    x = 408,818.43

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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.