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Finding the Fourth Proportional to 644,803.90, 966,745.05 and 289,527.10

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Solution

The fourth proportional to 644,803.90, 966,745.05 and 289,527.10 is: 434,083.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,803.90 : 966,745.05 = 289,527.10 : x
  2. Step 2: Convert to fraction form
    644,803.90/966,745.05 = 289,527.10/x
  3. Step 3: Cross multiply
    644,803.90x = 966,745.05 × 289,527.10
  4. Step 4: Simplify right side
    644,803.90x = 279,898,890,765.86
  5. Step 5: Solve for x
    x = 279,898,890,765.86/644,803.90
  6. Step 6: Final answer
    x = 434,083.74

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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.