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Finding the Fourth Proportional to 508,791.77, 763,187.66 and 193,247.90

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Solution

The fourth proportional to 508,791.77, 763,187.66 and 193,247.90 is: 289,871.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,791.77 : 763,187.66 = 193,247.90 : x
  2. Step 2: Convert to fraction form
    508,791.77/763,187.66 = 193,247.90/x
  3. Step 3: Cross multiply
    508,791.77x = 763,187.66 × 193,247.90
  4. Step 4: Simplify right side
    508,791.77x = 147,484,411,634.68
  5. Step 5: Solve for x
    x = 147,484,411,634.68/508,791.77
  6. Step 6: Final answer
    x = 289,871.85

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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.