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Finding the Fourth Proportional to 319,605.69, 441,057.15 and 176,369.88

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Solution

The fourth proportional to 319,605.69, 441,057.15 and 176,369.88 is: 243,391.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,605.69 : 441,057.15 = 176,369.88 : x
  2. Step 2: Convert to fraction form
    319,605.69/441,057.15 = 176,369.88/x
  3. Step 3: Cross multiply
    319,605.69x = 441,057.15 × 176,369.88
  4. Step 4: Simplify right side
    319,605.69x = 77,789,196,618.64
  5. Step 5: Solve for x
    x = 77,789,196,618.64/319,605.69
  6. Step 6: Final answer
    x = 243,391.15

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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.