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Finding the Fourth Proportional to 186,604.88, 257,515.08 and 101,721.92

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Solution

The fourth proportional to 186,604.88, 257,515.08 and 101,721.92 is: 140,376.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,604.88 : 257,515.08 = 101,721.92 : x
  2. Step 2: Convert to fraction form
    186,604.88/257,515.08 = 101,721.92/x
  3. Step 3: Cross multiply
    186,604.88x = 257,515.08 × 101,721.92
  4. Step 4: Simplify right side
    186,604.88x = 26,194,928,366.55
  5. Step 5: Solve for x
    x = 26,194,928,366.55/186,604.88
  6. Step 6: Final answer
    x = 140,376.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.