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Finding the Fourth Proportional to 58,327.86, 87,505.74 and 18,885

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Solution

The fourth proportional to 58,327.86, 87,505.74 and 18,885 is: 28,332.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,327.86 : 87,505.74 = 18,885 : x
  2. Step 2: Convert to fraction form
    58,327.86/87,505.74 = 18,885/x
  3. Step 3: Cross multiply
    58,327.86x = 87,505.74 × 18,885
  4. Step 4: Simplify right side
    58,327.86x = 1,652,545,899.90
  5. Step 5: Solve for x
    x = 1,652,545,899.90/58,327.86
  6. Step 6: Final answer
    x = 28,332.02

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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.