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Finding the Fourth Proportional to 8,571.12, 11,828.04 and 4,845.12

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Solution

The fourth proportional to 8,571.12, 11,828.04 and 4,845.12 is: 6,686.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,571.12 : 11,828.04 = 4,845.12 : x
  2. Step 2: Convert to fraction form
    8,571.12/11,828.04 = 4,845.12/x
  3. Step 3: Cross multiply
    8,571.12x = 11,828.04 × 4,845.12
  4. Step 4: Simplify right side
    8,571.12x = 57,308,273.16
  5. Step 5: Solve for x
    x = 57,308,273.16/8,571.12
  6. Step 6: Final answer
    x = 6,686.21

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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.