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Finding the Fourth Proportional to 7,260.60, 10,866.60 and 6,385.80

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Solution

The fourth proportional to 7,260.60, 10,866.60 and 6,385.80 is: 9,557.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,260.60 : 10,866.60 = 6,385.80 : x
  2. Step 2: Convert to fraction form
    7,260.60/10,866.60 = 6,385.80/x
  3. Step 3: Cross multiply
    7,260.60x = 10,866.60 × 6,385.80
  4. Step 4: Simplify right side
    7,260.60x = 69,391,934.28
  5. Step 5: Solve for x
    x = 69,391,934.28/7,260.60
  6. Step 6: Final answer
    x = 9,557.33

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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.