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Finding the Fourth Proportional to 78,668.82, 108,565.92 and 44,675.55

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Solution

The fourth proportional to 78,668.82, 108,565.92 and 44,675.55 is: 61,653.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,668.82 : 108,565.92 = 44,675.55 : x
  2. Step 2: Convert to fraction form
    78,668.82/108,565.92 = 44,675.55/x
  3. Step 3: Cross multiply
    78,668.82x = 108,565.92 × 44,675.55
  4. Step 4: Simplify right side
    78,668.82x = 4,850,242,187.26
  5. Step 5: Solve for x
    x = 4,850,242,187.26/78,668.82
  6. Step 6: Final answer
    x = 61,653.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.