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Finding the Fourth Proportional to 321,061.80, 443,072.66 and 175,881.45

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Solution

The fourth proportional to 321,061.80, 443,072.66 and 175,881.45 is: 242,720.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,061.80 : 443,072.66 = 175,881.45 : x
  2. Step 2: Convert to fraction form
    321,061.80/443,072.66 = 175,881.45/x
  3. Step 3: Cross multiply
    321,061.80x = 443,072.66 × 175,881.45
  4. Step 4: Simplify right side
    321,061.80x = 77,928,261,016.75
  5. Step 5: Solve for x
    x = 77,928,261,016.75/321,061.80
  6. Step 6: Final answer
    x = 242,720.44

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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.