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Finding the Fourth Proportional to 7,824.84, 10,798.32 and 4,288.32

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Solution

The fourth proportional to 7,824.84, 10,798.32 and 4,288.32 is: 5,917.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,824.84 : 10,798.32 = 4,288.32 : x
  2. Step 2: Convert to fraction form
    7,824.84/10,798.32 = 4,288.32/x
  3. Step 3: Cross multiply
    7,824.84x = 10,798.32 × 4,288.32
  4. Step 4: Simplify right side
    7,824.84x = 46,306,651.62
  5. Step 5: Solve for x
    x = 46,306,651.62/7,824.84
  6. Step 6: Final answer
    x = 5,917.90

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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.