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Finding the Fourth Proportional to 353,991.60, 530,112.60 and 235,018.80

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Solution

The fourth proportional to 353,991.60, 530,112.60 and 235,018.80 is: 351,947.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,991.60 : 530,112.60 = 235,018.80 : x
  2. Step 2: Convert to fraction form
    353,991.60/530,112.60 = 235,018.80/x
  3. Step 3: Cross multiply
    353,991.60x = 530,112.60 × 235,018.80
  4. Step 4: Simplify right side
    353,991.60x = 124,586,427,116.88
  5. Step 5: Solve for x
    x = 124,586,427,116.88/353,991.60
  6. Step 6: Final answer
    x = 351,947.41

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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.