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Finding the Fourth Proportional to 70,790.76, 106,093.80 and 35,711.28

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Solution

The fourth proportional to 70,790.76, 106,093.80 and 35,711.28 is: 53,520.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,790.76 : 106,093.80 = 35,711.28 : x
  2. Step 2: Convert to fraction form
    70,790.76/106,093.80 = 35,711.28/x
  3. Step 3: Cross multiply
    70,790.76x = 106,093.80 × 35,711.28
  4. Step 4: Simplify right side
    70,790.76x = 3,788,745,398.06
  5. Step 5: Solve for x
    x = 3,788,745,398.06/70,790.76
  6. Step 6: Final answer
    x = 53,520.34

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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.