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Finding the Fourth Proportional to 484,218.80, 726,328.20 and 188,730.80

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Solution

The fourth proportional to 484,218.80, 726,328.20 and 188,730.80 is: 283,096.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,218.80 : 726,328.20 = 188,730.80 : x
  2. Step 2: Convert to fraction form
    484,218.80/726,328.20 = 188,730.80/x
  3. Step 3: Cross multiply
    484,218.80x = 726,328.20 × 188,730.80
  4. Step 4: Simplify right side
    484,218.80x = 137,080,502,248.56
  5. Step 5: Solve for x
    x = 137,080,502,248.56/484,218.80
  6. Step 6: Final answer
    x = 283,096.20

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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.