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Finding the Fourth Proportional to 55,234.80, 82,852.20 and 52,815.60

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Solution

The fourth proportional to 55,234.80, 82,852.20 and 52,815.60 is: 79,223.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,234.80 : 82,852.20 = 52,815.60 : x
  2. Step 2: Convert to fraction form
    55,234.80/82,852.20 = 52,815.60/x
  3. Step 3: Cross multiply
    55,234.80x = 82,852.20 × 52,815.60
  4. Step 4: Simplify right side
    55,234.80x = 4,375,888,654.32
  5. Step 5: Solve for x
    x = 4,375,888,654.32/55,234.80
  6. Step 6: Final answer
    x = 79,223.40

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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.