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Finding the Fourth Proportional to 33,920.76, 46,812.15 and 18,812.40

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Solution

The fourth proportional to 33,920.76, 46,812.15 and 18,812.40 is: 25,961.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,920.76 : 46,812.15 = 18,812.40 : x
  2. Step 2: Convert to fraction form
    33,920.76/46,812.15 = 18,812.40/x
  3. Step 3: Cross multiply
    33,920.76x = 46,812.15 × 18,812.40
  4. Step 4: Simplify right side
    33,920.76x = 880,648,890.66
  5. Step 5: Solve for x
    x = 880,648,890.66/33,920.76
  6. Step 6: Final answer
    x = 25,961.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.