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Finding the Fourth Proportional to 58,682.86, 87,989.13 and 18,684.56

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Solution

The fourth proportional to 58,682.86, 87,989.13 and 18,684.56 is: 28,015.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,682.86 : 87,989.13 = 18,684.56 : x
  2. Step 2: Convert to fraction form
    58,682.86/87,989.13 = 18,684.56/x
  3. Step 3: Cross multiply
    58,682.86x = 87,989.13 × 18,684.56
  4. Step 4: Simplify right side
    58,682.86x = 1,644,038,178.83
  5. Step 5: Solve for x
    x = 1,644,038,178.83/58,682.86
  6. Step 6: Final answer
    x = 28,015.65

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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.