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Finding the Fourth Proportional to 484,513.60, 726,511.20 and 168,980.80

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Solution

The fourth proportional to 484,513.60, 726,511.20 and 168,980.80 is: 253,380.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,513.60 : 726,511.20 = 168,980.80 : x
  2. Step 2: Convert to fraction form
    484,513.60/726,511.20 = 168,980.80/x
  3. Step 3: Cross multiply
    484,513.60x = 726,511.20 × 168,980.80
  4. Step 4: Simplify right side
    484,513.60x = 122,766,443,784.96
  5. Step 5: Solve for x
    x = 122,766,443,784.96/484,513.60
  6. Step 6: Final answer
    x = 253,380.80

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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.