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Finding the Fourth Proportional to 1,906.99, 2,632.75 and 1,455.32

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Solution

The fourth proportional to 1,906.99, 2,632.75 and 1,455.32 is: 2,009.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,906.99 : 2,632.75 = 1,455.32 : x
  2. Step 2: Convert to fraction form
    1,906.99/2,632.75 = 1,455.32/x
  3. Step 3: Cross multiply
    1,906.99x = 2,632.75 × 1,455.32
  4. Step 4: Simplify right side
    1,906.99x = 3,831,490.05
  5. Step 5: Solve for x
    x = 3,831,490.05/1,906.99
  6. Step 6: Final answer
    x = 2,009.18

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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.