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Finding the Fourth Proportional to 53,287.20, 79,930.80 and 44,830.80

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Solution

The fourth proportional to 53,287.20, 79,930.80 and 44,830.80 is: 67,246.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,287.20 : 79,930.80 = 44,830.80 : x
  2. Step 2: Convert to fraction form
    53,287.20/79,930.80 = 44,830.80/x
  3. Step 3: Cross multiply
    53,287.20x = 79,930.80 × 44,830.80
  4. Step 4: Simplify right side
    53,287.20x = 3,583,361,708.64
  5. Step 5: Solve for x
    x = 3,583,361,708.64/53,287.20
  6. Step 6: Final answer
    x = 67,246.20

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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.