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Finding the Fourth Proportional to 68,435.52, 102,717.84 and 35,178.93

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Solution

The fourth proportional to 68,435.52, 102,717.84 and 35,178.93 is: 52,801.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,435.52 : 102,717.84 = 35,178.93 : x
  2. Step 2: Convert to fraction form
    68,435.52/102,717.84 = 35,178.93/x
  3. Step 3: Cross multiply
    68,435.52x = 102,717.84 × 35,178.93
  4. Step 4: Simplify right side
    68,435.52x = 3,613,503,703.11
  5. Step 5: Solve for x
    x = 3,613,503,703.11/68,435.52
  6. Step 6: Final answer
    x = 52,801.58

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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.