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Finding the Fourth Proportional to 621,832.21, 932,737.85 and 280,085.53

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Solution

The fourth proportional to 621,832.21, 932,737.85 and 280,085.53 is: 420,123.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,832.21 : 932,737.85 = 280,085.53 : x
  2. Step 2: Convert to fraction form
    621,832.21/932,737.85 = 280,085.53/x
  3. Step 3: Cross multiply
    621,832.21x = 932,737.85 × 280,085.53
  4. Step 4: Simplify right side
    621,832.21x = 261,246,375,068.31
  5. Step 5: Solve for x
    x = 261,246,375,068.31/621,832.21
  6. Step 6: Final answer
    x = 420,123.58

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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.