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Finding the Fourth Proportional to 73,058.80, 109,631.40 and 53,287.60

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Solution

The fourth proportional to 73,058.80, 109,631.40 and 53,287.60 is: 79,962.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,058.80 : 109,631.40 = 53,287.60 : x
  2. Step 2: Convert to fraction form
    73,058.80/109,631.40 = 53,287.60/x
  3. Step 3: Cross multiply
    73,058.80x = 109,631.40 × 53,287.60
  4. Step 4: Simplify right side
    73,058.80x = 5,841,994,190.64
  5. Step 5: Solve for x
    x = 5,841,994,190.64/73,058.80
  6. Step 6: Final answer
    x = 79,962.91

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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.