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Finding the Fourth Proportional to 67,200.55, 100,800.83 and 67,200.55

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Solution

The fourth proportional to 67,200.55, 100,800.83 and 67,200.55 is: 100,800.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,200.55 : 100,800.83 = 67,200.55 : x
  2. Step 2: Convert to fraction form
    67,200.55/100,800.83 = 67,200.55/x
  3. Step 3: Cross multiply
    67,200.55x = 100,800.83 × 67,200.55
  4. Step 4: Simplify right side
    67,200.55x = 6,773,870,880.45
  5. Step 5: Solve for x
    x = 6,773,870,880.45/67,200.55
  6. Step 6: Final answer
    x = 100,800.83

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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.