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Finding the Fourth Proportional to 401,048.60, 601,610.02 and 131,178.27

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Solution

The fourth proportional to 401,048.60, 601,610.02 and 131,178.27 is: 196,779.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,048.60 : 601,610.02 = 131,178.27 : x
  2. Step 2: Convert to fraction form
    401,048.60/601,610.02 = 131,178.27/x
  3. Step 3: Cross multiply
    401,048.60x = 601,610.02 × 131,178.27
  4. Step 4: Simplify right side
    401,048.60x = 78,918,161,638.27
  5. Step 5: Solve for x
    x = 78,918,161,638.27/401,048.60
  6. Step 6: Final answer
    x = 196,779.55

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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.