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Finding the Fourth Proportional to 70,662.96, 105,990.84 and 26,272.56

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Solution

The fourth proportional to 70,662.96, 105,990.84 and 26,272.56 is: 39,407.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,662.96 : 105,990.84 = 26,272.56 : x
  2. Step 2: Convert to fraction form
    70,662.96/105,990.84 = 26,272.56/x
  3. Step 3: Cross multiply
    70,662.96x = 105,990.84 × 26,272.56
  4. Step 4: Simplify right side
    70,662.96x = 2,784,650,703.35
  5. Step 5: Solve for x
    x = 2,784,650,703.35/70,662.96
  6. Step 6: Final answer
    x = 39,407.50

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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.