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Finding the Fourth Proportional to 368,359.30, 552,668.55 and 131,709.70

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Solution

The fourth proportional to 368,359.30, 552,668.55 and 131,709.70 is: 197,610.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,359.30 : 552,668.55 = 131,709.70 : x
  2. Step 2: Convert to fraction form
    368,359.30/552,668.55 = 131,709.70/x
  3. Step 3: Cross multiply
    368,359.30x = 552,668.55 × 131,709.70
  4. Step 4: Simplify right side
    368,359.30x = 72,791,808,919.94
  5. Step 5: Solve for x
    x = 72,791,808,919.94/368,359.30
  6. Step 6: Final answer
    x = 197,610.89

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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.