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Finding the Fourth Proportional to 46,667.40, 70,005.70 and 18,581.20

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Solution

The fourth proportional to 46,667.40, 70,005.70 and 18,581.20 is: 27,873.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,667.40 : 70,005.70 = 18,581.20 : x
  2. Step 2: Convert to fraction form
    46,667.40/70,005.70 = 18,581.20/x
  3. Step 3: Cross multiply
    46,667.40x = 70,005.70 × 18,581.20
  4. Step 4: Simplify right side
    46,667.40x = 1,300,789,912.84
  5. Step 5: Solve for x
    x = 1,300,789,912.84/46,667.40
  6. Step 6: Final answer
    x = 27,873.63

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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.