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Finding the Fourth Proportional to 7,213.54, 9,954.57 and 4,070.38

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Solution

The fourth proportional to 7,213.54, 9,954.57 and 4,070.38 is: 5,617.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,213.54 : 9,954.57 = 4,070.38 : x
  2. Step 2: Convert to fraction form
    7,213.54/9,954.57 = 4,070.38/x
  3. Step 3: Cross multiply
    7,213.54x = 9,954.57 × 4,070.38
  4. Step 4: Simplify right side
    7,213.54x = 40,518,882.64
  5. Step 5: Solve for x
    x = 40,518,882.64/7,213.54
  6. Step 6: Final answer
    x = 5,617.06

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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.