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Finding the Fourth Proportional to 60,721.88, 91,097.39 and 19,168.88

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Solution

The fourth proportional to 60,721.88, 91,097.39 and 19,168.88 is: 28,757.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,721.88 : 91,097.39 = 19,168.88 : x
  2. Step 2: Convert to fraction form
    60,721.88/91,097.39 = 19,168.88/x
  3. Step 3: Cross multiply
    60,721.88x = 91,097.39 × 19,168.88
  4. Step 4: Simplify right side
    60,721.88x = 1,746,234,529.66
  5. Step 5: Solve for x
    x = 1,746,234,529.66/60,721.88
  6. Step 6: Final answer
    x = 28,757.92

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1.5x scale

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.