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Finding the Fourth Proportional to 70,731.47, 106,031.30 and 48,555.29

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Solution

The fourth proportional to 70,731.47, 106,031.30 and 48,555.29 is: 72,787.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,731.47 : 106,031.30 = 48,555.29 : x
  2. Step 2: Convert to fraction form
    70,731.47/106,031.30 = 48,555.29/x
  3. Step 3: Cross multiply
    70,731.47x = 106,031.30 × 48,555.29
  4. Step 4: Simplify right side
    70,731.47x = 5,148,380,542.88
  5. Step 5: Solve for x
    x = 5,148,380,542.88/70,731.47
  6. Step 6: Final answer
    x = 72,787.69

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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.