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Finding the Fourth Proportional to 723,765.56, 1,087,344.94 and 682,866.50

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Solution

The fourth proportional to 723,765.56, 1,087,344.94 and 682,866.50 is: 1,025,900.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,765.56 : 1,087,344.94 = 682,866.50 : x
  2. Step 2: Convert to fraction form
    723,765.56/1,087,344.94 = 682,866.50/x
  3. Step 3: Cross multiply
    723,765.56x = 1,087,344.94 × 682,866.50
  4. Step 4: Simplify right side
    723,765.56x = 742,511,433,470.51
  5. Step 5: Solve for x
    x = 742,511,433,470.51/723,765.56
  6. Step 6: Final answer
    x = 1,025,900.48

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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.