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Finding the Fourth Proportional to 58,993.60, 81,405.12 and 35,121.28

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Solution

The fourth proportional to 58,993.60, 81,405.12 and 35,121.28 is: 48,463.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,993.60 : 81,405.12 = 35,121.28 : x
  2. Step 2: Convert to fraction form
    58,993.60/81,405.12 = 35,121.28/x
  3. Step 3: Cross multiply
    58,993.60x = 81,405.12 × 35,121.28
  4. Step 4: Simplify right side
    58,993.60x = 2,859,052,012.95
  5. Step 5: Solve for x
    x = 2,859,052,012.95/58,993.60
  6. Step 6: Final answer
    x = 48,463.77

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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.