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Finding the Fourth Proportional to 64,687.28, 96,830.24 and 35,031.56

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Solution

The fourth proportional to 64,687.28, 96,830.24 and 35,031.56 is: 52,438.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,687.28 : 96,830.24 = 35,031.56 : x
  2. Step 2: Convert to fraction form
    64,687.28/96,830.24 = 35,031.56/x
  3. Step 3: Cross multiply
    64,687.28x = 96,830.24 × 35,031.56
  4. Step 4: Simplify right side
    64,687.28x = 3,392,113,703.07
  5. Step 5: Solve for x
    x = 3,392,113,703.07/64,687.28
  6. Step 6: Final answer
    x = 52,438.66

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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.