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Finding the Fourth Proportional to 124,435.60, 186,847.80 and 71,947.60

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Solution

The fourth proportional to 124,435.60, 186,847.80 and 71,947.60 is: 108,033.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,435.60 : 186,847.80 = 71,947.60 : x
  2. Step 2: Convert to fraction form
    124,435.60/186,847.80 = 71,947.60/x
  3. Step 3: Cross multiply
    124,435.60x = 186,847.80 × 71,947.60
  4. Step 4: Simplify right side
    124,435.60x = 13,443,250,775.28
  5. Step 5: Solve for x
    x = 13,443,250,775.28/124,435.60
  6. Step 6: Final answer
    x = 108,033.80

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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.