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Finding the Fourth Proportional to 7,161.75, 9,883.22 and 4,018.01

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Solution

The fourth proportional to 7,161.75, 9,883.22 and 4,018.01 is: 5,544.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,161.75 : 9,883.22 = 4,018.01 : x
  2. Step 2: Convert to fraction form
    7,161.75/9,883.22 = 4,018.01/x
  3. Step 3: Cross multiply
    7,161.75x = 9,883.22 × 4,018.01
  4. Step 4: Simplify right side
    7,161.75x = 39,710,807.29
  5. Step 5: Solve for x
    x = 39,710,807.29/7,161.75
  6. Step 6: Final answer
    x = 5,544.85

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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.