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Finding the Fourth Proportional to 520,863.88, 781,373.82 and 188,517.64

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Solution

The fourth proportional to 520,863.88, 781,373.82 and 188,517.64 is: 282,804.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,863.88 : 781,373.82 = 188,517.64 : x
  2. Step 2: Convert to fraction form
    520,863.88/781,373.82 = 188,517.64/x
  3. Step 3: Cross multiply
    520,863.88x = 781,373.82 × 188,517.64
  4. Step 4: Simplify right side
    520,863.88x = 147,302,748,504.19
  5. Step 5: Solve for x
    x = 147,302,748,504.19/520,863.88
  6. Step 6: Final answer
    x = 282,804.69

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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.