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Finding the Fourth Proportional to 14,698.90, 20,283.90 and 8,730.41

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Solution

The fourth proportional to 14,698.90, 20,283.90 and 8,730.41 is: 12,047.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,698.90 : 20,283.90 = 8,730.41 : x
  2. Step 2: Convert to fraction form
    14,698.90/20,283.90 = 8,730.41/x
  3. Step 3: Cross multiply
    14,698.90x = 20,283.90 × 8,730.41
  4. Step 4: Simplify right side
    14,698.90x = 177,086,763.40
  5. Step 5: Solve for x
    x = 177,086,763.40/14,698.90
  6. Step 6: Final answer
    x = 12,047.62

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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.