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Finding the Fourth Proportional to 548,036.60, 821,666.10 and 248,660.60

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Solution

The fourth proportional to 548,036.60, 821,666.10 and 248,660.60 is: 372,814.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,036.60 : 821,666.10 = 248,660.60 : x
  2. Step 2: Convert to fraction form
    548,036.60/821,666.10 = 248,660.60/x
  3. Step 3: Cross multiply
    548,036.60x = 821,666.10 × 248,660.60
  4. Step 4: Simplify right side
    548,036.60x = 204,315,985,425.66
  5. Step 5: Solve for x
    x = 204,315,985,425.66/548,036.60
  6. Step 6: Final answer
    x = 372,814.49

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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.