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Finding the Fourth Proportional to 202,440.60, 303,515.10 and 113,721.30

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Solution

The fourth proportional to 202,440.60, 303,515.10 and 113,721.30 is: 170,500.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,440.60 : 303,515.10 = 113,721.30 : x
  2. Step 2: Convert to fraction form
    202,440.60/303,515.10 = 113,721.30/x
  3. Step 3: Cross multiply
    202,440.60x = 303,515.10 × 113,721.30
  4. Step 4: Simplify right side
    202,440.60x = 34,516,131,741.63
  5. Step 5: Solve for x
    x = 34,516,131,741.63/202,440.60
  6. Step 6: Final answer
    x = 170,500.05

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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.