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Finding the Fourth Proportional to 548,187.72, 822,370.14 and 169,019.64

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Solution

The fourth proportional to 548,187.72, 822,370.14 and 169,019.64 is: 253,556.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,187.72 : 822,370.14 = 169,019.64 : x
  2. Step 2: Convert to fraction form
    548,187.72/822,370.14 = 169,019.64/x
  3. Step 3: Cross multiply
    548,187.72x = 822,370.14 × 169,019.64
  4. Step 4: Simplify right side
    548,187.72x = 138,996,705,009.55
  5. Step 5: Solve for x
    x = 138,996,705,009.55/548,187.72
  6. Step 6: Final answer
    x = 253,556.77

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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.