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Finding the Fourth Proportional to 396,675.45, 595,100.66 and 130,425.21

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Solution

The fourth proportional to 396,675.45, 595,100.66 and 130,425.21 is: 195,666.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,675.45 : 595,100.66 = 130,425.21 : x
  2. Step 2: Convert to fraction form
    396,675.45/595,100.66 = 130,425.21/x
  3. Step 3: Cross multiply
    396,675.45x = 595,100.66 × 130,425.21
  4. Step 4: Simplify right side
    396,675.45x = 77,616,127,899.51
  5. Step 5: Solve for x
    x = 77,616,127,899.51/396,675.45
  6. Step 6: Final answer
    x = 195,666.58

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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.