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Finding the Fourth Proportional to 66,636.25, 99,954.39 and 17,388.25

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Solution

The fourth proportional to 66,636.25, 99,954.39 and 17,388.25 is: 26,082.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,636.25 : 99,954.39 = 17,388.25 : x
  2. Step 2: Convert to fraction form
    66,636.25/99,954.39 = 17,388.25/x
  3. Step 3: Cross multiply
    66,636.25x = 99,954.39 × 17,388.25
  4. Step 4: Simplify right side
    66,636.25x = 1,738,031,921.92
  5. Step 5: Solve for x
    x = 1,738,031,921.92/66,636.25
  6. Step 6: Final answer
    x = 26,082.38

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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.