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Finding the Fourth Proportional to 55,993.16, 83,960.58 and 20,903.96

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Solution

The fourth proportional to 55,993.16, 83,960.58 and 20,903.96 is: 31,345.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,993.16 : 83,960.58 = 20,903.96 : x
  2. Step 2: Convert to fraction form
    55,993.16/83,960.58 = 20,903.96/x
  3. Step 3: Cross multiply
    55,993.16x = 83,960.58 × 20,903.96
  4. Step 4: Simplify right side
    55,993.16x = 1,755,108,605.90
  5. Step 5: Solve for x
    x = 1,755,108,605.90/55,993.16
  6. Step 6: Final answer
    x = 31,345.05

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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.