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Finding the Fourth Proportional to 576,087.20, 863,482.80 and 276,711.20

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Solution

The fourth proportional to 576,087.20, 863,482.80 and 276,711.20 is: 414,755.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,087.20 : 863,482.80 = 276,711.20 : x
  2. Step 2: Convert to fraction form
    576,087.20/863,482.80 = 276,711.20/x
  3. Step 3: Cross multiply
    576,087.20x = 863,482.80 × 276,711.20
  4. Step 4: Simplify right side
    576,087.20x = 238,935,361,767.36
  5. Step 5: Solve for x
    x = 238,935,361,767.36/576,087.20
  6. Step 6: Final answer
    x = 414,755.55

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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.