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Finding the Fourth Proportional to 46,992.40, 70,472.21 and 18,905.17

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Solution

The fourth proportional to 46,992.40, 70,472.21 and 18,905.17 is: 28,351.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,992.40 : 70,472.21 = 18,905.17 : x
  2. Step 2: Convert to fraction form
    46,992.40/70,472.21 = 18,905.17/x
  3. Step 3: Cross multiply
    46,992.40x = 70,472.21 × 18,905.17
  4. Step 4: Simplify right side
    46,992.40x = 1,332,289,015.80
  5. Step 5: Solve for x
    x = 1,332,289,015.80/46,992.40
  6. Step 6: Final answer
    x = 28,351.16

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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.