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Finding the Fourth Proportional to 70,848.92, 106,273.42 and 39,278.36

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Solution

The fourth proportional to 70,848.92, 106,273.42 and 39,278.36 is: 58,917.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,848.92 : 106,273.42 = 39,278.36 : x
  2. Step 2: Convert to fraction form
    70,848.92/106,273.42 = 39,278.36/x
  3. Step 3: Cross multiply
    70,848.92x = 106,273.42 × 39,278.36
  4. Step 4: Simplify right side
    70,848.92x = 4,174,245,649.19
  5. Step 5: Solve for x
    x = 4,174,245,649.19/70,848.92
  6. Step 6: Final answer
    x = 58,917.56

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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.