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Finding the Fourth Proportional to 143,362.60, 215,043.90 and 134,614.60

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Solution

The fourth proportional to 143,362.60, 215,043.90 and 134,614.60 is: 201,921.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,362.60 : 215,043.90 = 134,614.60 : x
  2. Step 2: Convert to fraction form
    143,362.60/215,043.90 = 134,614.60/x
  3. Step 3: Cross multiply
    143,362.60x = 215,043.90 × 134,614.60
  4. Step 4: Simplify right side
    143,362.60x = 28,948,048,580.94
  5. Step 5: Solve for x
    x = 28,948,048,580.94/143,362.60
  6. Step 6: Final answer
    x = 201,921.90

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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.