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Finding the Fourth Proportional to 294,390.40, 441,643.20 and 125,910.40

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Solution

The fourth proportional to 294,390.40, 441,643.20 and 125,910.40 is: 188,890.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,390.40 : 441,643.20 = 125,910.40 : x
  2. Step 2: Convert to fraction form
    294,390.40/441,643.20 = 125,910.40/x
  3. Step 3: Cross multiply
    294,390.40x = 441,643.20 × 125,910.40
  4. Step 4: Simplify right side
    294,390.40x = 55,607,471,969.28
  5. Step 5: Solve for x
    x = 55,607,471,969.28/294,390.40
  6. Step 6: Final answer
    x = 188,890.24

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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.