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Finding the Fourth Proportional to 7,950.99, 11,920.71 and 4,663.47

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Solution

The fourth proportional to 7,950.99, 11,920.71 and 4,663.47 is: 6,991.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,950.99 : 11,920.71 = 4,663.47 : x
  2. Step 2: Convert to fraction form
    7,950.99/11,920.71 = 4,663.47/x
  3. Step 3: Cross multiply
    7,950.99x = 11,920.71 × 4,663.47
  4. Step 4: Simplify right side
    7,950.99x = 55,591,873.46
  5. Step 5: Solve for x
    x = 55,591,873.46/7,950.99
  6. Step 6: Final answer
    x = 6,991.82

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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.