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Finding the Fourth Proportional to 70,908.64, 105,526.01 and 68,546.32

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Solution

The fourth proportional to 70,908.64, 105,526.01 and 68,546.32 is: 102,010.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,908.64 : 105,526.01 = 68,546.32 : x
  2. Step 2: Convert to fraction form
    70,908.64/105,526.01 = 68,546.32/x
  3. Step 3: Cross multiply
    70,908.64x = 105,526.01 × 68,546.32
  4. Step 4: Simplify right side
    70,908.64x = 7,233,419,649.78
  5. Step 5: Solve for x
    x = 7,233,419,649.78/70,908.64
  6. Step 6: Final answer
    x = 102,010.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.