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Finding the Fourth Proportional to 217,383.90, 325,672.65 and 123,611.10

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Solution

The fourth proportional to 217,383.90, 325,672.65 and 123,611.10 is: 185,187.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,383.90 : 325,672.65 = 123,611.10 : x
  2. Step 2: Convert to fraction form
    217,383.90/325,672.65 = 123,611.10/x
  3. Step 3: Cross multiply
    217,383.90x = 325,672.65 × 123,611.10
  4. Step 4: Simplify right side
    217,383.90x = 40,256,754,506.42
  5. Step 5: Solve for x
    x = 40,256,754,506.42/217,383.90
  6. Step 6: Final answer
    x = 185,187.38

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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.