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Finding the Fourth Proportional to 367,071.55, 550,443.30 and 142,357.30

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Solution

The fourth proportional to 367,071.55, 550,443.30 and 142,357.30 is: 213,472.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,071.55 : 550,443.30 = 142,357.30 : x
  2. Step 2: Convert to fraction form
    367,071.55/550,443.30 = 142,357.30/x
  3. Step 3: Cross multiply
    367,071.55x = 550,443.30 × 142,357.30
  4. Step 4: Simplify right side
    367,071.55x = 78,359,621,991.09
  5. Step 5: Solve for x
    x = 78,359,621,991.09/367,071.55
  6. Step 6: Final answer
    x = 213,472.34

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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.