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Finding the Fourth Proportional to 201,663.10, 302,494.65 and 131,160.70

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Solution

The fourth proportional to 201,663.10, 302,494.65 and 131,160.70 is: 196,741.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,663.10 : 302,494.65 = 131,160.70 : x
  2. Step 2: Convert to fraction form
    201,663.10/302,494.65 = 131,160.70/x
  3. Step 3: Cross multiply
    201,663.10x = 302,494.65 × 131,160.70
  4. Step 4: Simplify right side
    201,663.10x = 39,675,410,040.26
  5. Step 5: Solve for x
    x = 39,675,410,040.26/201,663.10
  6. Step 6: Final answer
    x = 196,741.05

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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.