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Finding the Fourth Proportional to 33,113.64, 45,696.80 and 18,209.64

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Solution

The fourth proportional to 33,113.64, 45,696.80 and 18,209.64 is: 25,129.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,113.64 : 45,696.80 = 18,209.64 : x
  2. Step 2: Convert to fraction form
    33,113.64/45,696.80 = 18,209.64/x
  3. Step 3: Cross multiply
    33,113.64x = 45,696.80 × 18,209.64
  4. Step 4: Simplify right side
    33,113.64x = 832,122,277.15
  5. Step 5: Solve for x
    x = 832,122,277.15/33,113.64
  6. Step 6: Final answer
    x = 25,129.29

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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.