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Finding the Fourth Proportional to 70,804.44, 97,709.34 and 38,972.64

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Solution

The fourth proportional to 70,804.44, 97,709.34 and 38,972.64 is: 53,781.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,804.44 : 97,709.34 = 38,972.64 : x
  2. Step 2: Convert to fraction form
    70,804.44/97,709.34 = 38,972.64/x
  3. Step 3: Cross multiply
    70,804.44x = 97,709.34 × 38,972.64
  4. Step 4: Simplify right side
    70,804.44x = 3,807,990,932.46
  5. Step 5: Solve for x
    x = 3,807,990,932.46/70,804.44
  6. Step 6: Final answer
    x = 53,781.81

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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.