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Finding the Fourth Proportional to 70,563.72, 105,881.94 and 46,887.51

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Solution

The fourth proportional to 70,563.72, 105,881.94 and 46,887.51 is: 70,355.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,563.72 : 105,881.94 = 46,887.51 : x
  2. Step 2: Convert to fraction form
    70,563.72/105,881.94 = 46,887.51/x
  3. Step 3: Cross multiply
    70,563.72x = 105,881.94 × 46,887.51
  4. Step 4: Simplify right side
    70,563.72x = 4,964,540,520.57
  5. Step 5: Solve for x
    x = 4,964,540,520.57/70,563.72
  6. Step 6: Final answer
    x = 70,355.43

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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.