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Finding the Fourth Proportional to 412,662.76, 618,952.66 and 113,173.45

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Solution

The fourth proportional to 412,662.76, 618,952.66 and 113,173.45 is: 169,748.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,662.76 : 618,952.66 = 113,173.45 : x
  2. Step 2: Convert to fraction form
    412,662.76/618,952.66 = 113,173.45/x
  3. Step 3: Cross multiply
    412,662.76x = 618,952.66 × 113,173.45
  4. Step 4: Simplify right side
    412,662.76x = 70,049,006,088.56
  5. Step 5: Solve for x
    x = 70,049,006,088.56/412,662.76
  6. Step 6: Final answer
    x = 169,748.80

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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.