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Finding the Fourth Proportional to 70,419.92, 105,558.76 and 44,143.08

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Solution

The fourth proportional to 70,419.92, 105,558.76 and 44,143.08 is: 66,170.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,419.92 : 105,558.76 = 44,143.08 : x
  2. Step 2: Convert to fraction form
    70,419.92/105,558.76 = 44,143.08/x
  3. Step 3: Cross multiply
    70,419.92x = 105,558.76 × 44,143.08
  4. Step 4: Simplify right side
    70,419.92x = 4,659,688,787.38
  5. Step 5: Solve for x
    x = 4,659,688,787.38/70,419.92
  6. Step 6: Final answer
    x = 66,170.04

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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.