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Finding the Fourth Proportional to 5,541.05, 7,642.71 and 5,357.99

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Solution

The fourth proportional to 5,541.05, 7,642.71 and 5,357.99 is: 7,390.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,541.05 : 7,642.71 = 5,357.99 : x
  2. Step 2: Convert to fraction form
    5,541.05/7,642.71 = 5,357.99/x
  3. Step 3: Cross multiply
    5,541.05x = 7,642.71 × 5,357.99
  4. Step 4: Simplify right side
    5,541.05x = 40,949,525.54
  5. Step 5: Solve for x
    x = 40,949,525.54/5,541.05
  6. Step 6: Final answer
    x = 7,390.22

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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.