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Finding the Fourth Proportional to 147,072.40, 220,090.20 and 134,630.80

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Solution

The fourth proportional to 147,072.40, 220,090.20 and 134,630.80 is: 201,471.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,072.40 : 220,090.20 = 134,630.80 : x
  2. Step 2: Convert to fraction form
    147,072.40/220,090.20 = 134,630.80/x
  3. Step 3: Cross multiply
    147,072.40x = 220,090.20 × 134,630.80
  4. Step 4: Simplify right side
    147,072.40x = 29,630,919,698.16
  5. Step 5: Solve for x
    x = 29,630,919,698.16/147,072.40
  6. Step 6: Final answer
    x = 201,471.65

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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.