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Finding the Fourth Proportional to 53,121.60, 79,801.20 and 44,373.60

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Solution

The fourth proportional to 53,121.60, 79,801.20 and 44,373.60 is: 66,659.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,121.60 : 79,801.20 = 44,373.60 : x
  2. Step 2: Convert to fraction form
    53,121.60/79,801.20 = 44,373.60/x
  3. Step 3: Cross multiply
    53,121.60x = 79,801.20 × 44,373.60
  4. Step 4: Simplify right side
    53,121.60x = 3,541,066,528.32
  5. Step 5: Solve for x
    x = 3,541,066,528.32/53,121.60
  6. Step 6: Final answer
    x = 66,659.64

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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.