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Finding the Fourth Proportional to 70,439.94, 105,604.31 and 34,913.49

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Solution

The fourth proportional to 70,439.94, 105,604.31 and 34,913.49 is: 52,342.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,439.94 : 105,604.31 = 34,913.49 : x
  2. Step 2: Convert to fraction form
    70,439.94/105,604.31 = 34,913.49/x
  3. Step 3: Cross multiply
    70,439.94x = 105,604.31 × 34,913.49
  4. Step 4: Simplify right side
    70,439.94x = 3,687,015,021.14
  5. Step 5: Solve for x
    x = 3,687,015,021.14/70,439.94
  6. Step 6: Final answer
    x = 52,342.68

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1.5x scale

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.