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Finding the Fourth Proportional to 321,051.49, 481,609.04 and 118,700.66

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Solution

The fourth proportional to 321,051.49, 481,609.04 and 118,700.66 is: 178,062.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,051.49 : 481,609.04 = 118,700.66 : x
  2. Step 2: Convert to fraction form
    321,051.49/481,609.04 = 118,700.66/x
  3. Step 3: Cross multiply
    321,051.49x = 481,609.04 × 118,700.66
  4. Step 4: Simplify right side
    321,051.49x = 57,167,310,909.97
  5. Step 5: Solve for x
    x = 57,167,310,909.97/321,051.49
  6. Step 6: Final answer
    x = 178,062.75

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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.