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Finding the Fourth Proportional to 57,304.80, 79,076.66 and 31,809.16

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Solution

The fourth proportional to 57,304.80, 79,076.66 and 31,809.16 is: 43,894.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,304.80 : 79,076.66 = 31,809.16 : x
  2. Step 2: Convert to fraction form
    57,304.80/79,076.66 = 31,809.16/x
  3. Step 3: Cross multiply
    57,304.80x = 79,076.66 × 31,809.16
  4. Step 4: Simplify right side
    57,304.80x = 2,515,362,130.21
  5. Step 5: Solve for x
    x = 2,515,362,130.21/57,304.80
  6. Step 6: Final answer
    x = 43,894.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.