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Finding the Fourth Proportional to 93,390, 140,086.28 and 31,060.56

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Solution

The fourth proportional to 93,390, 140,086.28 and 31,060.56 is: 46,591.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,390 : 140,086.28 = 31,060.56 : x
  2. Step 2: Convert to fraction form
    93,390/140,086.28 = 31,060.56/x
  3. Step 3: Cross multiply
    93,390x = 140,086.28 × 31,060.56
  4. Step 4: Simplify right side
    93,390x = 4,351,158,305.12
  5. Step 5: Solve for x
    x = 4,351,158,305.12/93,390
  6. Step 6: Final answer
    x = 46,591.27

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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.