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Finding the Fourth Proportional to 58,309.30, 87,471.06 and 20,873.32

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Solution

The fourth proportional to 58,309.30, 87,471.06 and 20,873.32 is: 31,312.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,309.30 : 87,471.06 = 20,873.32 : x
  2. Step 2: Convert to fraction form
    58,309.30/87,471.06 = 20,873.32/x
  3. Step 3: Cross multiply
    58,309.30x = 87,471.06 × 20,873.32
  4. Step 4: Simplify right side
    58,309.30x = 1,825,811,426.12
  5. Step 5: Solve for x
    x = 1,825,811,426.12/58,309.30
  6. Step 6: Final answer
    x = 31,312.53

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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.