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Finding the Fourth Proportional to 621,179.54, 931,790.16 and 171,862.82

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Solution

The fourth proportional to 621,179.54, 931,790.16 and 171,862.82 is: 257,799.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,179.54 : 931,790.16 = 171,862.82 : x
  2. Step 2: Convert to fraction form
    621,179.54/931,790.16 = 171,862.82/x
  3. Step 3: Cross multiply
    621,179.54x = 931,790.16 × 171,862.82
  4. Step 4: Simplify right side
    621,179.54x = 160,140,079,886.90
  5. Step 5: Solve for x
    x = 160,140,079,886.90/621,179.54
  6. Step 6: Final answer
    x = 257,799.99

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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.