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Finding the Fourth Proportional to 78,156.66, 107,855.75 and 44,176.15

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Solution

The fourth proportional to 78,156.66, 107,855.75 and 44,176.15 is: 60,962.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,156.66 : 107,855.75 = 44,176.15 : x
  2. Step 2: Convert to fraction form
    78,156.66/107,855.75 = 44,176.15/x
  3. Step 3: Cross multiply
    78,156.66x = 107,855.75 × 44,176.15
  4. Step 4: Simplify right side
    78,156.66x = 4,764,652,035.62
  5. Step 5: Solve for x
    x = 4,764,652,035.62/78,156.66
  6. Step 6: Final answer
    x = 60,962.84

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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.