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Finding the Fourth Proportional to 608,991.60, 913,421.78 and 159,757.50

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Solution

The fourth proportional to 608,991.60, 913,421.78 and 159,757.50 is: 239,619.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,991.60 : 913,421.78 = 159,757.50 : x
  2. Step 2: Convert to fraction form
    608,991.60/913,421.78 = 159,757.50/x
  3. Step 3: Cross multiply
    608,991.60x = 913,421.78 × 159,757.50
  4. Step 4: Simplify right side
    608,991.60x = 145,925,979,219.56
  5. Step 5: Solve for x
    x = 145,925,979,219.56/608,991.60
  6. Step 6: Final answer
    x = 239,619.03

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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.