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Finding the Fourth Proportional to 576,042.40, 863,804.40 and 220,938.40

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Solution

The fourth proportional to 576,042.40, 863,804.40 and 220,938.40 is: 331,308.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,042.40 : 863,804.40 = 220,938.40 : x
  2. Step 2: Convert to fraction form
    576,042.40/863,804.40 = 220,938.40/x
  3. Step 3: Cross multiply
    576,042.40x = 863,804.40 × 220,938.40
  4. Step 4: Simplify right side
    576,042.40x = 190,847,562,048.96
  5. Step 5: Solve for x
    x = 190,847,562,048.96/576,042.40
  6. Step 6: Final answer
    x = 331,308.19

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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.