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Finding the Fourth Proportional to 62,880.71, 94,332.70 and 20,763.71

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Solution

The fourth proportional to 62,880.71, 94,332.70 and 20,763.71 is: 31,149.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,880.71 : 94,332.70 = 20,763.71 : x
  2. Step 2: Convert to fraction form
    62,880.71/94,332.70 = 20,763.71/x
  3. Step 3: Cross multiply
    62,880.71x = 94,332.70 × 20,763.71
  4. Step 4: Simplify right side
    62,880.71x = 1,958,696,734.36
  5. Step 5: Solve for x
    x = 1,958,696,734.36/62,880.71
  6. Step 6: Final answer
    x = 31,149.41

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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.