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Finding the Fourth Proportional to 74,487.84, 102,787.14 and 43,856.10

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Solution

The fourth proportional to 74,487.84, 102,787.14 and 43,856.10 is: 60,517.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,487.84 : 102,787.14 = 43,856.10 : x
  2. Step 2: Convert to fraction form
    74,487.84/102,787.14 = 43,856.10/x
  3. Step 3: Cross multiply
    74,487.84x = 102,787.14 × 43,856.10
  4. Step 4: Simplify right side
    74,487.84x = 4,507,843,090.55
  5. Step 5: Solve for x
    x = 4,507,843,090.55/74,487.84
  6. Step 6: Final answer
    x = 60,517.84

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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.