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Finding the Fourth Proportional to 262,501.38, 393,739.20 and 72,960.48

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Solution

The fourth proportional to 262,501.38, 393,739.20 and 72,960.48 is: 109,437.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,501.38 : 393,739.20 = 72,960.48 : x
  2. Step 2: Convert to fraction form
    262,501.38/393,739.20 = 72,960.48/x
  3. Step 3: Cross multiply
    262,501.38x = 393,739.20 × 72,960.48
  4. Step 4: Simplify right side
    262,501.38x = 28,727,401,026.82
  5. Step 5: Solve for x
    x = 28,727,401,026.82/262,501.38
  6. Step 6: Final answer
    x = 109,437.14

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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.