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Finding the Fourth Proportional to 704,828.73, 972,653.23 and 398,963.11

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Solution

The fourth proportional to 704,828.73, 972,653.23 and 398,963.11 is: 550,563.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,828.73 : 972,653.23 = 398,963.11 : x
  2. Step 2: Convert to fraction form
    704,828.73/972,653.23 = 398,963.11/x
  3. Step 3: Cross multiply
    704,828.73x = 972,653.23 × 398,963.11
  4. Step 4: Simplify right side
    704,828.73x = 388,052,757,592.35
  5. Step 5: Solve for x
    x = 388,052,757,592.35/704,828.73
  6. Step 6: Final answer
    x = 550,563.20

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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.