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Finding the Fourth Proportional to 621,507.63, 932,258.79 and 172,227.21

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Solution

The fourth proportional to 621,507.63, 932,258.79 and 172,227.21 is: 258,340.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,507.63 : 932,258.79 = 172,227.21 : x
  2. Step 2: Convert to fraction form
    621,507.63/932,258.79 = 172,227.21/x
  3. Step 3: Cross multiply
    621,507.63x = 932,258.79 × 172,227.21
  4. Step 4: Simplify right side
    621,507.63x = 160,560,330,399.68
  5. Step 5: Solve for x
    x = 160,560,330,399.68/621,507.63
  6. Step 6: Final answer
    x = 258,340.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.