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Finding the Fourth Proportional to 321,411.94, 443,518.66 and 178,159.80

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Solution

The fourth proportional to 321,411.94, 443,518.66 and 178,159.80 is: 245,844.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,411.94 : 443,518.66 = 178,159.80 : x
  2. Step 2: Convert to fraction form
    321,411.94/443,518.66 = 178,159.80/x
  3. Step 3: Cross multiply
    321,411.94x = 443,518.66 × 178,159.80
  4. Step 4: Simplify right side
    321,411.94x = 79,017,195,761.87
  5. Step 5: Solve for x
    x = 79,017,195,761.87/321,411.94
  6. Step 6: Final answer
    x = 245,844.00

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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.