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Finding the Fourth Proportional to 633,143.76, 873,808.40 and 361,278.60

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Solution

The fourth proportional to 633,143.76, 873,808.40 and 361,278.60 is: 498,604.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,143.76 : 873,808.40 = 361,278.60 : x
  2. Step 2: Convert to fraction form
    633,143.76/873,808.40 = 361,278.60/x
  3. Step 3: Cross multiply
    633,143.76x = 873,808.40 × 361,278.60
  4. Step 4: Simplify right side
    633,143.76x = 315,688,275,420.24
  5. Step 5: Solve for x
    x = 315,688,275,420.24/633,143.76
  6. Step 6: Final answer
    x = 498,604.42

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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.