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Finding the Fourth Proportional to 863,756.18, 1,294,416.38 and 407,861

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Solution

The fourth proportional to 863,756.18, 1,294,416.38 and 407,861 is: 611,216.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,756.18 : 1,294,416.38 = 407,861 : x
  2. Step 2: Convert to fraction form
    863,756.18/1,294,416.38 = 407,861/x
  3. Step 3: Cross multiply
    863,756.18x = 1,294,416.38 × 407,861
  4. Step 4: Simplify right side
    863,756.18x = 527,941,959,163.18
  5. Step 5: Solve for x
    x = 527,941,959,163.18/863,756.18
  6. Step 6: Final answer
    x = 611,216.42

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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.