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Finding the Fourth Proportional to 7,788.58, 11,634.62 and 7,007.32

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Solution

The fourth proportional to 7,788.58, 11,634.62 and 7,007.32 is: 10,467.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,788.58 : 11,634.62 = 7,007.32 : x
  2. Step 2: Convert to fraction form
    7,788.58/11,634.62 = 7,007.32/x
  3. Step 3: Cross multiply
    7,788.58x = 11,634.62 × 7,007.32
  4. Step 4: Simplify right side
    7,788.58x = 81,527,505.42
  5. Step 5: Solve for x
    x = 81,527,505.42/7,788.58
  6. Step 6: Final answer
    x = 10,467.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.