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Finding the Fourth Proportional to 61,689.86, 92,520.59 and 19,562.12

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Solution

The fourth proportional to 61,689.86, 92,520.59 and 19,562.12 is: 29,338.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,689.86 : 92,520.59 = 19,562.12 : x
  2. Step 2: Convert to fraction form
    61,689.86/92,520.59 = 19,562.12/x
  3. Step 3: Cross multiply
    61,689.86x = 92,520.59 × 19,562.12
  4. Step 4: Simplify right side
    61,689.86x = 1,809,898,323.64
  5. Step 5: Solve for x
    x = 1,809,898,323.64/61,689.86
  6. Step 6: Final answer
    x = 29,338.67

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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.