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Finding the Fourth Proportional to 202,466.60, 303,699.90 and 142,105.40

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Solution

The fourth proportional to 202,466.60, 303,699.90 and 142,105.40 is: 213,158.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,466.60 : 303,699.90 = 142,105.40 : x
  2. Step 2: Convert to fraction form
    202,466.60/303,699.90 = 142,105.40/x
  3. Step 3: Cross multiply
    202,466.60x = 303,699.90 × 142,105.40
  4. Step 4: Simplify right side
    202,466.60x = 43,157,395,769.46
  5. Step 5: Solve for x
    x = 43,157,395,769.46/202,466.60
  6. Step 6: Final answer
    x = 213,158.10

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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.