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Finding the Fourth Proportional to 70,481.42, 105,721.66 and 56,529.12

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Solution

The fourth proportional to 70,481.42, 105,721.66 and 56,529.12 is: 84,793.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,481.42 : 105,721.66 = 56,529.12 : x
  2. Step 2: Convert to fraction form
    70,481.42/105,721.66 = 56,529.12/x
  3. Step 3: Cross multiply
    70,481.42x = 105,721.66 × 56,529.12
  4. Step 4: Simplify right side
    70,481.42x = 5,976,352,404.74
  5. Step 5: Solve for x
    x = 5,976,352,404.74/70,481.42
  6. Step 6: Final answer
    x = 84,793.30

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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.