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Finding the Fourth Proportional to 207,608.21, 286,499.33 and 112,114.90

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Solution

The fourth proportional to 207,608.21, 286,499.33 and 112,114.90 is: 154,718.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,608.21 : 286,499.33 = 112,114.90 : x
  2. Step 2: Convert to fraction form
    207,608.21/286,499.33 = 112,114.90/x
  3. Step 3: Cross multiply
    207,608.21x = 286,499.33 × 112,114.90
  4. Step 4: Simplify right side
    207,608.21x = 32,120,844,371.43
  5. Step 5: Solve for x
    x = 32,120,844,371.43/207,608.21
  6. Step 6: Final answer
    x = 154,718.56

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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.