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Finding the Fourth Proportional to 1,292,566.82, 1,939,735.89 and 451,118.57

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Solution

The fourth proportional to 1,292,566.82, 1,939,735.89 and 451,118.57 is: 676,986.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,566.82 : 1,939,735.89 = 451,118.57 : x
  2. Step 2: Convert to fraction form
    1,292,566.82/1,939,735.89 = 451,118.57/x
  3. Step 3: Cross multiply
    1,292,566.82x = 1,939,735.89 × 451,118.57
  4. Step 4: Simplify right side
    1,292,566.82x = 875,050,871,175.80
  5. Step 5: Solve for x
    x = 875,050,871,175.80/1,292,566.82
  6. Step 6: Final answer
    x = 676,986.95

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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.