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Finding the Fourth Proportional to 70,429.60, 105,644.25 and 46,783.27

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Solution

The fourth proportional to 70,429.60, 105,644.25 and 46,783.27 is: 70,174.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,429.60 : 105,644.25 = 46,783.27 : x
  2. Step 2: Convert to fraction form
    70,429.60/105,644.25 = 46,783.27/x
  3. Step 3: Cross multiply
    70,429.60x = 105,644.25 × 46,783.27
  4. Step 4: Simplify right side
    70,429.60x = 4,942,383,603.75
  5. Step 5: Solve for x
    x = 4,942,383,603.75/70,429.60
  6. Step 6: Final answer
    x = 70,174.81

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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.