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Finding the Fourth Proportional to 62,912.76, 86,774.04 and 42,734.40

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Solution

The fourth proportional to 62,912.76, 86,774.04 and 42,734.40 is: 58,942.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,912.76 : 86,774.04 = 42,734.40 : x
  2. Step 2: Convert to fraction form
    62,912.76/86,774.04 = 42,734.40/x
  3. Step 3: Cross multiply
    62,912.76x = 86,774.04 × 42,734.40
  4. Step 4: Simplify right side
    62,912.76x = 3,708,236,534.98
  5. Step 5: Solve for x
    x = 3,708,236,534.98/62,912.76
  6. Step 6: Final answer
    x = 58,942.52

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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.