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Finding the Fourth Proportional to 291,040.40, 401,659.08 and 163,708.40

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Solution

The fourth proportional to 291,040.40, 401,659.08 and 163,708.40 is: 225,930.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,040.40 : 401,659.08 = 163,708.40 : x
  2. Step 2: Convert to fraction form
    291,040.40/401,659.08 = 163,708.40/x
  3. Step 3: Cross multiply
    291,040.40x = 401,659.08 × 163,708.40
  4. Step 4: Simplify right side
    291,040.40x = 65,754,965,332.27
  5. Step 5: Solve for x
    x = 65,754,965,332.27/291,040.40
  6. Step 6: Final answer
    x = 225,930.71

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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.