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Finding the Fourth Proportional to 7,209.80, 10,814.70 and 6,594.20

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Solution

The fourth proportional to 7,209.80, 10,814.70 and 6,594.20 is: 9,891.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,209.80 : 10,814.70 = 6,594.20 : x
  2. Step 2: Convert to fraction form
    7,209.80/10,814.70 = 6,594.20/x
  3. Step 3: Cross multiply
    7,209.80x = 10,814.70 × 6,594.20
  4. Step 4: Simplify right side
    7,209.80x = 71,314,294.74
  5. Step 5: Solve for x
    x = 71,314,294.74/7,209.80
  6. Step 6: Final answer
    x = 9,891.30

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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.