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Finding the Fourth Proportional to 408,632.80, 612,950.28 and 124,326.04

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Solution

The fourth proportional to 408,632.80, 612,950.28 and 124,326.04 is: 186,489.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,632.80 : 612,950.28 = 124,326.04 : x
  2. Step 2: Convert to fraction form
    408,632.80/612,950.28 = 124,326.04/x
  3. Step 3: Cross multiply
    408,632.80x = 612,950.28 × 124,326.04
  4. Step 4: Simplify right side
    408,632.80x = 76,205,681,029.29
  5. Step 5: Solve for x
    x = 76,205,681,029.29/408,632.80
  6. Step 6: Final answer
    x = 186,489.39

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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.