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Finding the Fourth Proportional to 168,689.52, 232,640.78 and 139,963.72

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Solution

The fourth proportional to 168,689.52, 232,640.78 and 139,963.72 is: 193,024.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,689.52 : 232,640.78 = 139,963.72 : x
  2. Step 2: Convert to fraction form
    168,689.52/232,640.78 = 139,963.72/x
  3. Step 3: Cross multiply
    168,689.52x = 232,640.78 × 139,963.72
  4. Step 4: Simplify right side
    168,689.52x = 32,561,268,992.50
  5. Step 5: Solve for x
    x = 32,561,268,992.50/168,689.52
  6. Step 6: Final answer
    x = 193,024.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.