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Finding the Fourth Proportional to 621,912.14, 932,934.86 and 172,634.90

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Solution

The fourth proportional to 621,912.14, 932,934.86 and 172,634.90 is: 258,970.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,912.14 : 932,934.86 = 172,634.90 : x
  2. Step 2: Convert to fraction form
    621,912.14/932,934.86 = 172,634.90/x
  3. Step 3: Cross multiply
    621,912.14x = 932,934.86 × 172,634.90
  4. Step 4: Simplify right side
    621,912.14x = 161,057,116,262.61
  5. Step 5: Solve for x
    x = 161,057,116,262.61/621,912.14
  6. Step 6: Final answer
    x = 258,970.85

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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.