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Finding the Fourth Proportional to 66,440, 99,660.36 and 17,192

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Solution

The fourth proportional to 66,440, 99,660.36 and 17,192 is: 25,788.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,440 : 99,660.36 = 17,192 : x
  2. Step 2: Convert to fraction form
    66,440/99,660.36 = 17,192/x
  3. Step 3: Cross multiply
    66,440x = 99,660.36 × 17,192
  4. Step 4: Simplify right side
    66,440x = 1,713,360,909.12
  5. Step 5: Solve for x
    x = 1,713,360,909.12/66,440
  6. Step 6: Final answer
    x = 25,788.09

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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.