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Finding the Fourth Proportional to 571,628.69, 788,879.09 and 316,974.41

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Solution

The fourth proportional to 571,628.69, 788,879.09 and 316,974.41 is: 437,442.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,628.69 : 788,879.09 = 316,974.41 : x
  2. Step 2: Convert to fraction form
    571,628.69/788,879.09 = 316,974.41/x
  3. Step 3: Cross multiply
    571,628.69x = 788,879.09 × 316,974.41
  4. Step 4: Simplify right side
    571,628.69x = 250,054,484,114.09
  5. Step 5: Solve for x
    x = 250,054,484,114.09/571,628.69
  6. Step 6: Final answer
    x = 437,442.15

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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.