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Finding the Fourth Proportional to 516,443.11, 774,602.96 and 137,391.56

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Solution

The fourth proportional to 516,443.11, 774,602.96 and 137,391.56 is: 206,070.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,443.11 : 774,602.96 = 137,391.56 : x
  2. Step 2: Convert to fraction form
    516,443.11/774,602.96 = 137,391.56/x
  3. Step 3: Cross multiply
    516,443.11x = 774,602.96 × 137,391.56
  4. Step 4: Simplify right side
    516,443.11x = 106,423,910,304.57
  5. Step 5: Solve for x
    x = 106,423,910,304.57/516,443.11
  6. Step 6: Final answer
    x = 206,070.93

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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.