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Finding the Fourth Proportional to 621,251.86, 931,879.14 and 171,974.02

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Solution

The fourth proportional to 621,251.86, 931,879.14 and 171,974.02 is: 257,961.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,251.86 : 931,879.14 = 171,974.02 : x
  2. Step 2: Convert to fraction form
    621,251.86/931,879.14 = 171,974.02/x
  3. Step 3: Cross multiply
    621,251.86x = 931,879.14 × 171,974.02
  4. Step 4: Simplify right side
    621,251.86x = 160,259,001,859.94
  5. Step 5: Solve for x
    x = 160,259,001,859.94/621,251.86
  6. Step 6: Final answer
    x = 257,961.40

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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.