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Finding the Fourth Proportional to 543,794.61, 815,634.51 and 144,475.75

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Solution

The fourth proportional to 543,794.61, 815,634.51 and 144,475.75 is: 216,698.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,794.61 : 815,634.51 = 144,475.75 : x
  2. Step 2: Convert to fraction form
    543,794.61/815,634.51 = 144,475.75/x
  3. Step 3: Cross multiply
    543,794.61x = 815,634.51 × 144,475.75
  4. Step 4: Simplify right side
    543,794.61x = 117,839,408,848.57
  5. Step 5: Solve for x
    x = 117,839,408,848.57/543,794.61
  6. Step 6: Final answer
    x = 216,698.37

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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.