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Finding the Fourth Proportional to 73,956.40, 110,934.60 and 73,178.80

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Solution

The fourth proportional to 73,956.40, 110,934.60 and 73,178.80 is: 109,768.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,956.40 : 110,934.60 = 73,178.80 : x
  2. Step 2: Convert to fraction form
    73,956.40/110,934.60 = 73,178.80/x
  3. Step 3: Cross multiply
    73,956.40x = 110,934.60 × 73,178.80
  4. Step 4: Simplify right side
    73,956.40x = 8,118,060,906.48
  5. Step 5: Solve for x
    x = 8,118,060,906.48/73,956.40
  6. Step 6: Final answer
    x = 109,768.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.