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Finding the Fourth Proportional to 396,653.89, 547,179.56 and 253,263.17

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Solution

The fourth proportional to 396,653.89, 547,179.56 and 253,263.17 is: 349,373.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,653.89 : 547,179.56 = 253,263.17 : x
  2. Step 2: Convert to fraction form
    396,653.89/547,179.56 = 253,263.17/x
  3. Step 3: Cross multiply
    396,653.89x = 547,179.56 × 253,263.17
  4. Step 4: Simplify right side
    396,653.89x = 138,580,429,924.81
  5. Step 5: Solve for x
    x = 138,580,429,924.81/396,653.89
  6. Step 6: Final answer
    x = 349,373.68

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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.