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Finding the Fourth Proportional to 158,653.11, 218,859.75 and 104,197.47

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Solution

The fourth proportional to 158,653.11, 218,859.75 and 104,197.47 is: 143,738.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,653.11 : 218,859.75 = 104,197.47 : x
  2. Step 2: Convert to fraction form
    158,653.11/218,859.75 = 104,197.47/x
  3. Step 3: Cross multiply
    158,653.11x = 218,859.75 × 104,197.47
  4. Step 4: Simplify right side
    158,653.11x = 22,804,632,234.83
  5. Step 5: Solve for x
    x = 22,804,632,234.83/158,653.11
  6. Step 6: Final answer
    x = 143,738.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.