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Finding the Fourth Proportional to 7,902.47, 11,860.19 and 4,007.99

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Solution

The fourth proportional to 7,902.47, 11,860.19 and 4,007.99 is: 6,015.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,902.47 : 11,860.19 = 4,007.99 : x
  2. Step 2: Convert to fraction form
    7,902.47/11,860.19 = 4,007.99/x
  3. Step 3: Cross multiply
    7,902.47x = 11,860.19 × 4,007.99
  4. Step 4: Simplify right side
    7,902.47x = 47,535,522.92
  5. Step 5: Solve for x
    x = 47,535,522.92/7,902.47
  6. Step 6: Final answer
    x = 6,015.27

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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.