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Finding the Fourth Proportional to 391,690.44, 587,798.37 and 251,547.48

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Solution

The fourth proportional to 391,690.44, 587,798.37 and 251,547.48 is: 377,489.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,690.44 : 587,798.37 = 251,547.48 : x
  2. Step 2: Convert to fraction form
    391,690.44/587,798.37 = 251,547.48/x
  3. Step 3: Cross multiply
    391,690.44x = 587,798.37 × 251,547.48
  4. Step 4: Simplify right side
    391,690.44x = 147,859,198,721.61
  5. Step 5: Solve for x
    x = 147,859,198,721.61/391,690.44
  6. Step 6: Final answer
    x = 377,489.93

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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.