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Finding the Fourth Proportional to 65,866.80, 98,800.20 and 60,423.60

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Solution

The fourth proportional to 65,866.80, 98,800.20 and 60,423.60 is: 90,635.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,866.80 : 98,800.20 = 60,423.60 : x
  2. Step 2: Convert to fraction form
    65,866.80/98,800.20 = 60,423.60/x
  3. Step 3: Cross multiply
    65,866.80x = 98,800.20 × 60,423.60
  4. Step 4: Simplify right side
    65,866.80x = 5,969,863,764.72
  5. Step 5: Solve for x
    x = 5,969,863,764.72/65,866.80
  6. Step 6: Final answer
    x = 90,635.40

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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.