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Finding the Fourth Proportional to 70,643.73, 97,484.31 and 38,811.99

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Solution

The fourth proportional to 70,643.73, 97,484.31 and 38,811.99 is: 53,558.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,643.73 : 97,484.31 = 38,811.99 : x
  2. Step 2: Convert to fraction form
    70,643.73/97,484.31 = 38,811.99/x
  3. Step 3: Cross multiply
    70,643.73x = 97,484.31 × 38,811.99
  4. Step 4: Simplify right side
    70,643.73x = 3,783,560,064.88
  5. Step 5: Solve for x
    x = 3,783,560,064.88/70,643.73
  6. Step 6: Final answer
    x = 53,558.33

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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.