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Finding the Fourth Proportional to 31,507.92, 43,479.36 and 17,358.48

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Solution

The fourth proportional to 31,507.92, 43,479.36 and 17,358.48 is: 23,953.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,507.92 : 43,479.36 = 17,358.48 : x
  2. Step 2: Convert to fraction form
    31,507.92/43,479.36 = 17,358.48/x
  3. Step 3: Cross multiply
    31,507.92x = 43,479.36 × 17,358.48
  4. Step 4: Simplify right side
    31,507.92x = 754,735,600.97
  5. Step 5: Solve for x
    x = 754,735,600.97/31,507.92
  6. Step 6: Final answer
    x = 23,953.84

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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.