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Finding the Fourth Proportional to 78,665.80, 108,552.18 and 44,667.40

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Solution

The fourth proportional to 78,665.80, 108,552.18 and 44,667.40 is: 61,637.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,665.80 : 108,552.18 = 44,667.40 : x
  2. Step 2: Convert to fraction form
    78,665.80/108,552.18 = 44,667.40/x
  3. Step 3: Cross multiply
    78,665.80x = 108,552.18 × 44,667.40
  4. Step 4: Simplify right side
    78,665.80x = 4,848,743,644.93
  5. Step 5: Solve for x
    x = 4,848,743,644.93/78,665.80
  6. Step 6: Final answer
    x = 61,637.25

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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.