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Finding the Fourth Proportional to 78,758.63, 108,683.87 and 44,771.58

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Solution

The fourth proportional to 78,758.63, 108,683.87 and 44,771.58 is: 61,783.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,758.63 : 108,683.87 = 44,771.58 : x
  2. Step 2: Convert to fraction form
    78,758.63/108,683.87 = 44,771.58/x
  3. Step 3: Cross multiply
    78,758.63x = 108,683.87 × 44,771.58
  4. Step 4: Simplify right side
    78,758.63x = 4,865,948,356.56
  5. Step 5: Solve for x
    x = 4,865,948,356.56/78,758.63
  6. Step 6: Final answer
    x = 61,783.05

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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.