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Finding the Fourth Proportional to 78,674.73, 108,567.34 and 44,678.72

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Solution

The fourth proportional to 78,674.73, 108,567.34 and 44,678.72 is: 61,654.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,674.73 : 108,567.34 = 44,678.72 : x
  2. Step 2: Convert to fraction form
    78,674.73/108,567.34 = 44,678.72/x
  3. Step 3: Cross multiply
    78,674.73x = 108,567.34 × 44,678.72
  4. Step 4: Simplify right side
    78,674.73x = 4,850,649,944.73
  5. Step 5: Solve for x
    x = 4,850,649,944.73/78,674.73
  6. Step 6: Final answer
    x = 61,654.49

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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.