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Finding the Fourth Proportional to 78,764.55, 108,690.76 and 44,768.32

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Solution

The fourth proportional to 78,764.55, 108,690.76 and 44,768.32 is: 61,777.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,764.55 : 108,690.76 = 44,768.32 : x
  2. Step 2: Convert to fraction form
    78,764.55/108,690.76 = 44,768.32/x
  3. Step 3: Cross multiply
    78,764.55x = 108,690.76 × 44,768.32
  4. Step 4: Simplify right side
    78,764.55x = 4,865,902,724.72
  5. Step 5: Solve for x
    x = 4,865,902,724.72/78,764.55
  6. Step 6: Final answer
    x = 61,777.83

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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.