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Finding the Fourth Proportional to 31,489.52, 43,455.52 and 17,342.32

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Solution

The fourth proportional to 31,489.52, 43,455.52 and 17,342.32 is: 23,932.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,489.52 : 43,455.52 = 17,342.32 : x
  2. Step 2: Convert to fraction form
    31,489.52/43,455.52 = 17,342.32/x
  3. Step 3: Cross multiply
    31,489.52x = 43,455.52 × 17,342.32
  4. Step 4: Simplify right side
    31,489.52x = 753,619,533.61
  5. Step 5: Solve for x
    x = 753,619,533.61/31,489.52
  6. Step 6: Final answer
    x = 23,932.39

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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.