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Finding the Fourth Proportional to 245,765.20, 368,431.80 and 166,622.80

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Solution

The fourth proportional to 245,765.20, 368,431.80 and 166,622.80 is: 249,787.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,765.20 : 368,431.80 = 166,622.80 : x
  2. Step 2: Convert to fraction form
    245,765.20/368,431.80 = 166,622.80/x
  3. Step 3: Cross multiply
    245,765.20x = 368,431.80 × 166,622.80
  4. Step 4: Simplify right side
    245,765.20x = 61,389,138,125.04
  5. Step 5: Solve for x
    x = 61,389,138,125.04/245,765.20
  6. Step 6: Final answer
    x = 249,787.76

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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.