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Finding the Fourth Proportional to 14,470.80, 21,706.80 and 4,609.80

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Solution

The fourth proportional to 14,470.80, 21,706.80 and 4,609.80 is: 6,914.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,470.80 : 21,706.80 = 4,609.80 : x
  2. Step 2: Convert to fraction form
    14,470.80/21,706.80 = 4,609.80/x
  3. Step 3: Cross multiply
    14,470.80x = 21,706.80 × 4,609.80
  4. Step 4: Simplify right side
    14,470.80x = 100,064,006.64
  5. Step 5: Solve for x
    x = 100,064,006.64/14,470.80
  6. Step 6: Final answer
    x = 6,914.89

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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.