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Finding the Fourth Proportional to 53,953.90, 80,954.20 and 28,964.79

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Solution

The fourth proportional to 53,953.90, 80,954.20 and 28,964.79 is: 43,459.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,953.90 : 80,954.20 = 28,964.79 : x
  2. Step 2: Convert to fraction form
    53,953.90/80,954.20 = 28,964.79/x
  3. Step 3: Cross multiply
    53,953.90x = 80,954.20 × 28,964.79
  4. Step 4: Simplify right side
    53,953.90x = 2,344,821,438.82
  5. Step 5: Solve for x
    x = 2,344,821,438.82/53,953.90
  6. Step 6: Final answer
    x = 43,459.72

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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.