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Finding the Fourth Proportional to 452,726.28, 679,384.26 and 172,245.96

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Solution

The fourth proportional to 452,726.28, 679,384.26 and 172,245.96 is: 258,481.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,726.28 : 679,384.26 = 172,245.96 : x
  2. Step 2: Convert to fraction form
    452,726.28/679,384.26 = 172,245.96/x
  3. Step 3: Cross multiply
    452,726.28x = 679,384.26 × 172,245.96
  4. Step 4: Simplify right side
    452,726.28x = 117,021,194,072.59
  5. Step 5: Solve for x
    x = 117,021,194,072.59/452,726.28
  6. Step 6: Final answer
    x = 258,481.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.