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Finding the Fourth Proportional to 58,990.89, 81,405.12 and 36,059.10

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Solution

The fourth proportional to 58,990.89, 81,405.12 and 36,059.10 is: 49,760.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,990.89 : 81,405.12 = 36,059.10 : x
  2. Step 2: Convert to fraction form
    58,990.89/81,405.12 = 36,059.10/x
  3. Step 3: Cross multiply
    58,990.89x = 81,405.12 × 36,059.10
  4. Step 4: Simplify right side
    58,990.89x = 2,935,395,704.42
  5. Step 5: Solve for x
    x = 2,935,395,704.42/58,990.89
  6. Step 6: Final answer
    x = 49,760.15

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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.