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Finding the Fourth Proportional to 17,172.78, 23,698.14 and 9,619.04

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Solution

The fourth proportional to 17,172.78, 23,698.14 and 9,619.04 is: 13,274.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,172.78 : 23,698.14 = 9,619.04 : x
  2. Step 2: Convert to fraction form
    17,172.78/23,698.14 = 9,619.04/x
  3. Step 3: Cross multiply
    17,172.78x = 23,698.14 × 9,619.04
  4. Step 4: Simplify right side
    17,172.78x = 227,953,356.59
  5. Step 5: Solve for x
    x = 227,953,356.59/17,172.78
  6. Step 6: Final answer
    x = 13,274.11

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1.5x scale

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.