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Finding the Fourth Proportional to 161,903.28, 223,415.64 and 101,471.76

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Solution

The fourth proportional to 161,903.28, 223,415.64 and 101,471.76 is: 140,024.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,903.28 : 223,415.64 = 101,471.76 : x
  2. Step 2: Convert to fraction form
    161,903.28/223,415.64 = 101,471.76/x
  3. Step 3: Cross multiply
    161,903.28x = 223,415.64 × 101,471.76
  4. Step 4: Simplify right side
    161,903.28x = 22,670,378,202.33
  5. Step 5: Solve for x
    x = 22,670,378,202.33/161,903.28
  6. Step 6: Final answer
    x = 140,024.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.