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Finding the Fourth Proportional to 483,612.80, 725,419.20 and 188,124.80

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Solution

The fourth proportional to 483,612.80, 725,419.20 and 188,124.80 is: 282,187.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,612.80 : 725,419.20 = 188,124.80 : x
  2. Step 2: Convert to fraction form
    483,612.80/725,419.20 = 188,124.80/x
  3. Step 3: Cross multiply
    483,612.80x = 725,419.20 × 188,124.80
  4. Step 4: Simplify right side
    483,612.80x = 136,469,341,916.16
  5. Step 5: Solve for x
    x = 136,469,341,916.16/483,612.80
  6. Step 6: Final answer
    x = 282,187.20

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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.