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Finding the Fourth Proportional to 40,800.60, 61,200.90 and 40,800.60

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Solution

The fourth proportional to 40,800.60, 61,200.90 and 40,800.60 is: 61,200.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,800.60 : 61,200.90 = 40,800.60 : x
  2. Step 2: Convert to fraction form
    40,800.60/61,200.90 = 40,800.60/x
  3. Step 3: Cross multiply
    40,800.60x = 61,200.90 × 40,800.60
  4. Step 4: Simplify right side
    40,800.60x = 2,497,033,440.54
  5. Step 5: Solve for x
    x = 2,497,033,440.54/40,800.60
  6. Step 6: Final answer
    x = 61,200.90

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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.