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Finding the Fourth Proportional to 77,800.80, 116,701.20 and 48,276.30

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Solution

The fourth proportional to 77,800.80, 116,701.20 and 48,276.30 is: 72,414.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,800.80 : 116,701.20 = 48,276.30 : x
  2. Step 2: Convert to fraction form
    77,800.80/116,701.20 = 48,276.30/x
  3. Step 3: Cross multiply
    77,800.80x = 116,701.20 × 48,276.30
  4. Step 4: Simplify right side
    77,800.80x = 5,633,902,141.56
  5. Step 5: Solve for x
    x = 5,633,902,141.56/77,800.80
  6. Step 6: Final answer
    x = 72,414.45

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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.