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Finding the Fourth Proportional to 78,299.85, 108,056.19 and 46,028.55

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Solution

The fourth proportional to 78,299.85, 108,056.19 and 46,028.55 is: 63,520.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,299.85 : 108,056.19 = 46,028.55 : x
  2. Step 2: Convert to fraction form
    78,299.85/108,056.19 = 46,028.55/x
  3. Step 3: Cross multiply
    78,299.85x = 108,056.19 × 46,028.55
  4. Step 4: Simplify right side
    78,299.85x = 4,973,669,744.22
  5. Step 5: Solve for x
    x = 4,973,669,744.22/78,299.85
  6. Step 6: Final answer
    x = 63,520.81

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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.