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Finding the Fourth Proportional to 571,993.38, 857,480.22 and 217,256.51

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Solution

The fourth proportional to 571,993.38, 857,480.22 and 217,256.51 is: 325,691.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,993.38 : 857,480.22 = 217,256.51 : x
  2. Step 2: Convert to fraction form
    571,993.38/857,480.22 = 217,256.51/x
  3. Step 3: Cross multiply
    571,993.38x = 857,480.22 × 217,256.51
  4. Step 4: Simplify right side
    571,993.38x = 186,293,156,761.25
  5. Step 5: Solve for x
    x = 186,293,156,761.25/571,993.38
  6. Step 6: Final answer
    x = 325,691.11

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Double scale
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Similar ratio
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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.