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Finding the Fourth Proportional to 143,712.72, 215,602.48 and 48,943.73

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Solution

The fourth proportional to 143,712.72, 215,602.48 and 48,943.73 is: 73,426.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,712.72 : 215,602.48 = 48,943.73 : x
  2. Step 2: Convert to fraction form
    143,712.72/215,602.48 = 48,943.73/x
  3. Step 3: Cross multiply
    143,712.72x = 215,602.48 × 48,943.73
  4. Step 4: Simplify right side
    143,712.72x = 10,552,388,245.72
  5. Step 5: Solve for x
    x = 10,552,388,245.72/143,712.72
  6. Step 6: Final answer
    x = 73,426.96

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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.