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Finding the Fourth Proportional to 78,809.72, 108,758.64 and 44,817.32

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Solution

The fourth proportional to 78,809.72, 108,758.64 and 44,817.32 is: 61,848.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,809.72 : 108,758.64 = 44,817.32 : x
  2. Step 2: Convert to fraction form
    78,809.72/108,758.64 = 44,817.32/x
  3. Step 3: Cross multiply
    78,809.72x = 108,758.64 × 44,817.32
  4. Step 4: Simplify right side
    78,809.72x = 4,874,270,771.64
  5. Step 5: Solve for x
    x = 4,874,270,771.64/78,809.72
  6. Step 6: Final answer
    x = 61,848.60

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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.