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Finding the Fourth Proportional to 7,326.86, 10,990.29 and 4,866.49

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Solution

The fourth proportional to 7,326.86, 10,990.29 and 4,866.49 is: 7,299.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,326.86 : 10,990.29 = 4,866.49 : x
  2. Step 2: Convert to fraction form
    7,326.86/10,990.29 = 4,866.49/x
  3. Step 3: Cross multiply
    7,326.86x = 10,990.29 × 4,866.49
  4. Step 4: Simplify right side
    7,326.86x = 53,484,081.43
  5. Step 5: Solve for x
    x = 53,484,081.43/7,326.86
  6. Step 6: Final answer
    x = 7,299.73

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Double scale
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Similar ratio
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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.