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Finding the Fourth Proportional to 140,310.63, 193,631.51 and 76,652.53

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Solution

The fourth proportional to 140,310.63, 193,631.51 and 76,652.53 is: 105,782.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,310.63 : 193,631.51 = 76,652.53 : x
  2. Step 2: Convert to fraction form
    140,310.63/193,631.51 = 76,652.53/x
  3. Step 3: Cross multiply
    140,310.63x = 193,631.51 × 76,652.53
  4. Step 4: Simplify right side
    140,310.63x = 14,842,344,836.77
  5. Step 5: Solve for x
    x = 14,842,344,836.77/140,310.63
  6. Step 6: Final answer
    x = 105,782.04

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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.