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Finding the Fourth Proportional to 70,035.17, 96,656.63 and 38,993.54

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Solution

The fourth proportional to 70,035.17, 96,656.63 and 38,993.54 is: 53,815.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,035.17 : 96,656.63 = 38,993.54 : x
  2. Step 2: Convert to fraction form
    70,035.17/96,656.63 = 38,993.54/x
  3. Step 3: Cross multiply
    70,035.17x = 96,656.63 × 38,993.54
  4. Step 4: Simplify right side
    70,035.17x = 3,768,983,489.92
  5. Step 5: Solve for x
    x = 3,768,983,489.92/70,035.17
  6. Step 6: Final answer
    x = 53,815.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.