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Finding the Fourth Proportional to 70,896.80, 97,832.48 and 39,063.84

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Solution

The fourth proportional to 70,896.80, 97,832.48 and 39,063.84 is: 53,905.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,896.80 : 97,832.48 = 39,063.84 : x
  2. Step 2: Convert to fraction form
    70,896.80/97,832.48 = 39,063.84/x
  3. Step 3: Cross multiply
    70,896.80x = 97,832.48 × 39,063.84
  4. Step 4: Simplify right side
    70,896.80x = 3,821,712,345.52
  5. Step 5: Solve for x
    x = 3,821,712,345.52/70,896.80
  6. Step 6: Final answer
    x = 53,905.29

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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.