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Finding the Fourth Proportional to 78,023.91, 107,672.94 and 44,039.55

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Solution

The fourth proportional to 78,023.91, 107,672.94 and 44,039.55 is: 60,774.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,023.91 : 107,672.94 = 44,039.55 : x
  2. Step 2: Convert to fraction form
    78,023.91/107,672.94 = 44,039.55/x
  3. Step 3: Cross multiply
    78,023.91x = 107,672.94 × 44,039.55
  4. Step 4: Simplify right side
    78,023.91x = 4,741,867,824.78
  5. Step 5: Solve for x
    x = 4,741,867,824.78/78,023.91
  6. Step 6: Final answer
    x = 60,774.55

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1.5x scale

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.