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Finding the Fourth Proportional to 66,497.92, 99,717.76 and 19,753.60

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Solution

The fourth proportional to 66,497.92, 99,717.76 and 19,753.60 is: 29,621.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,497.92 : 99,717.76 = 19,753.60 : x
  2. Step 2: Convert to fraction form
    66,497.92/99,717.76 = 19,753.60/x
  3. Step 3: Cross multiply
    66,497.92x = 99,717.76 × 19,753.60
  4. Step 4: Simplify right side
    66,497.92x = 1,969,784,743.94
  5. Step 5: Solve for x
    x = 1,969,784,743.94/66,497.92
  6. Step 6: Final answer
    x = 29,621.75

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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.