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Finding the Fourth Proportional to 53,107.20, 79,660.80 and 48,268.80

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Solution

The fourth proportional to 53,107.20, 79,660.80 and 48,268.80 is: 72,403.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,107.20 : 79,660.80 = 48,268.80 : x
  2. Step 2: Convert to fraction form
    53,107.20/79,660.80 = 48,268.80/x
  3. Step 3: Cross multiply
    53,107.20x = 79,660.80 × 48,268.80
  4. Step 4: Simplify right side
    53,107.20x = 3,845,131,223.04
  5. Step 5: Solve for x
    x = 3,845,131,223.04/53,107.20
  6. Step 6: Final answer
    x = 72,403.20

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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.