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Finding the Fourth Proportional to 72,315.66, 108,284.82 and 58,198.56

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Solution

The fourth proportional to 72,315.66, 108,284.82 and 58,198.56 is: 87,146.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,315.66 : 108,284.82 = 58,198.56 : x
  2. Step 2: Convert to fraction form
    72,315.66/108,284.82 = 58,198.56/x
  3. Step 3: Cross multiply
    72,315.66x = 108,284.82 × 58,198.56
  4. Step 4: Simplify right side
    72,315.66x = 6,302,020,593.86
  5. Step 5: Solve for x
    x = 6,302,020,593.86/72,315.66
  6. Step 6: Final answer
    x = 87,146.00

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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.