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Finding the Fourth Proportional to 378,258.80, 567,455.28 and 125,554.40

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Solution

The fourth proportional to 378,258.80, 567,455.28 and 125,554.40 is: 188,353.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,258.80 : 567,455.28 = 125,554.40 : x
  2. Step 2: Convert to fraction form
    378,258.80/567,455.28 = 125,554.40/x
  3. Step 3: Cross multiply
    378,258.80x = 567,455.28 × 125,554.40
  4. Step 4: Simplify right side
    378,258.80x = 71,246,507,207.23
  5. Step 5: Solve for x
    x = 71,246,507,207.23/378,258.80
  6. Step 6: Final answer
    x = 188,353.87

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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.