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Finding the Fourth Proportional to 14,943.30, 22,414.95 and 7,920.60

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Solution

The fourth proportional to 14,943.30, 22,414.95 and 7,920.60 is: 11,880.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,943.30 : 22,414.95 = 7,920.60 : x
  2. Step 2: Convert to fraction form
    14,943.30/22,414.95 = 7,920.60/x
  3. Step 3: Cross multiply
    14,943.30x = 22,414.95 × 7,920.60
  4. Step 4: Simplify right side
    14,943.30x = 177,539,852.97
  5. Step 5: Solve for x
    x = 177,539,852.97/14,943.30
  6. Step 6: Final answer
    x = 11,880.90

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1.5x scale

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.