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Finding the Fourth Proportional to 61,338.63, 92,007.83 and 19,221.93

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Solution

The fourth proportional to 61,338.63, 92,007.83 and 19,221.93 is: 28,832.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,338.63 : 92,007.83 = 19,221.93 : x
  2. Step 2: Convert to fraction form
    61,338.63/92,007.83 = 19,221.93/x
  3. Step 3: Cross multiply
    61,338.63x = 92,007.83 × 19,221.93
  4. Step 4: Simplify right side
    61,338.63x = 1,768,567,971.60
  5. Step 5: Solve for x
    x = 1,768,567,971.60/61,338.63
  6. Step 6: Final answer
    x = 28,832.86

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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.