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Finding the Fourth Proportional to 5,661.36, 7,814.95 and 5,512.32

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Solution

The fourth proportional to 5,661.36, 7,814.95 and 5,512.32 is: 7,609.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,661.36 : 7,814.95 = 5,512.32 : x
  2. Step 2: Convert to fraction form
    5,661.36/7,814.95 = 5,512.32/x
  3. Step 3: Cross multiply
    5,661.36x = 7,814.95 × 5,512.32
  4. Step 4: Simplify right side
    5,661.36x = 43,078,491.40
  5. Step 5: Solve for x
    x = 43,078,491.40/5,661.36
  6. Step 6: Final answer
    x = 7,609.21

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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.