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Finding the Fourth Proportional to 7,975.60, 11,007.60 and 5,744.92

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Solution

The fourth proportional to 7,975.60, 11,007.60 and 5,744.92 is: 7,928.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,975.60 : 11,007.60 = 5,744.92 : x
  2. Step 2: Convert to fraction form
    7,975.60/11,007.60 = 5,744.92/x
  3. Step 3: Cross multiply
    7,975.60x = 11,007.60 × 5,744.92
  4. Step 4: Simplify right side
    7,975.60x = 63,237,781.39
  5. Step 5: Solve for x
    x = 63,237,781.39/7,975.60
  6. Step 6: Final answer
    x = 7,928.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.