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Finding the Fourth Proportional to 61,686.86, 92,516.09 and 19,559.12

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Solution

The fourth proportional to 61,686.86, 92,516.09 and 19,559.12 is: 29,334.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,686.86 : 92,516.09 = 19,559.12 : x
  2. Step 2: Convert to fraction form
    61,686.86/92,516.09 = 19,559.12/x
  3. Step 3: Cross multiply
    61,686.86x = 92,516.09 × 19,559.12
  4. Step 4: Simplify right side
    61,686.86x = 1,809,532,745.86
  5. Step 5: Solve for x
    x = 1,809,532,745.86/61,686.86
  6. Step 6: Final answer
    x = 29,334.17

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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.