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Finding the Fourth Proportional to 403,238.41, 604,859.20 and 163,356.85

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Solution

The fourth proportional to 403,238.41, 604,859.20 and 163,356.85 is: 245,035.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,238.41 : 604,859.20 = 163,356.85 : x
  2. Step 2: Convert to fraction form
    403,238.41/604,859.20 = 163,356.85/x
  3. Step 3: Cross multiply
    403,238.41x = 604,859.20 × 163,356.85
  4. Step 4: Simplify right side
    403,238.41x = 98,807,894,872.08
  5. Step 5: Solve for x
    x = 98,807,894,872.08/403,238.41
  6. Step 6: Final answer
    x = 245,035.92

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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.