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Finding the Fourth Proportional to 58,989.46, 81,420.16 and 36,347.86

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Solution

The fourth proportional to 58,989.46, 81,420.16 and 36,347.86 is: 50,169.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,989.46 : 81,420.16 = 36,347.86 : x
  2. Step 2: Convert to fraction form
    58,989.46/81,420.16 = 36,347.86/x
  3. Step 3: Cross multiply
    58,989.46x = 81,420.16 × 36,347.86
  4. Step 4: Simplify right side
    58,989.46x = 2,959,448,576.86
  5. Step 5: Solve for x
    x = 2,959,448,576.86/58,989.46
  6. Step 6: Final answer
    x = 50,169.11

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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.